* i18n/L10n update

* translator comments added
* remove superfluous whitespace

26 files changed, 236 insertions, 194 deletions

diff --git a/plugins/OStatus/OStatusPlugin.php b/plugins/OStatus/OStatusPlugin.php
index 77bc9872b..2dddfcbe2 100644
--- a/plugins/OStatus/OStatusPlugin.php
+++ b/plugins/OStatus/OStatusPlugin.php
@@ -223,6 +223,7 @@ class OStatusPlugin extends Plugin
                                     array('nickname' => $profile->nickname));
             $output->element('a', array('href' => $url,
                                         'class' => 'entity_remote_subscribe'),
+                                // TRANS: Link description for link to subscribe to a remote user.
                                 _m('Subscribe'));
 
             $output->elementEnd('li');
@@ -241,6 +242,7 @@ class OStatusPlugin extends Plugin
                                     array('group' => $group->nickname));
             $output->element('a', array('href' => $url,
                                         'class' => 'entity_remote_subscribe'),
+                                // TRANS: Link description for link to join a remote group.
                                 _m('Join'));
         }
 
@@ -453,6 +455,7 @@ class OStatusPlugin extends Plugin
                 }
 
                 $url = $notice->url;
+                // TRANSLATE: %s is a domain.
                 $title = sprintf(_m("Sent from %s via OStatus"), $domain);
                 return false;
             }
@@ -524,6 +527,7 @@ class OStatusPlugin extends Plugin
         }
 
         if (!$oprofile->subscribe()) {
+            // TRANS: Exception.
             throw new Exception(_m('Could not set up remote subscription.'));
         }
     }
@@ -563,10 +567,10 @@ class OStatusPlugin extends Plugin
                                   common_date_iso8601(time()));
 
         $act->time    = time();
-        $act->title   = _("Follow");
+        $act->title   = _m("Follow");
         // TRANS: Success message for subscribe to user attempt through OStatus.
         // TRANS: %1$s is the subscriber name, %2$s is the subscribed user's name.
-        $act->content = sprintf(_("%1$s is now following %2$s."),
+        $act->content = sprintf(_m('%1$s is now following %2$s.'),
                                $subscriber->getBestName(),
                                $other->getBestName());
 
@@ -613,10 +617,10 @@ class OStatusPlugin extends Plugin
                                   common_date_iso8601(time()));
 
         $act->time    = time();
-        $act->title   = _("Unfollow");
+        $act->title   = _m('Unfollow');
         // TRANS: Success message for unsubscribe from user attempt through OStatus.
         // TRANS: %1$s is the unsubscriber's name, %2$s is the unsubscribed user's name.
-        $act->content = sprintf(_("%1$s stopped following %2$s."),
+        $act->content = sprintf(_m('%1$s stopped following %2$s.'),
                                $profile->getBestName(),
                                $other->getBestName());
 
@@ -671,6 +675,7 @@ class OStatusPlugin extends Plugin
                 return true;
             } else {
                 $oprofile->garbageCollect();
+                // TRANS: Exception.
                 throw new Exception(_m("Failed joining remote group."));
             }
         }
@@ -729,7 +734,6 @@ class OStatusPlugin extends Plugin
      * @param Notice $notice being favored
      * @return hook return value
      */
-
     function onEndFavorNotice(Profile $profile, Notice $notice)
     {
         $user = User::staticGet('id', $profile->id);
@@ -753,10 +757,10 @@ class OStatusPlugin extends Plugin
                                   common_date_iso8601(time()));
 
         $act->time    = time();
-        $act->title   = _("Favor");
+        $act->title   = _m('Favor');
         // TRANS: Success message for adding a favorite notice through OStatus.
         // TRANS: %1$s is the favoring user's name, %2$s is URI to the favored notice.
-        $act->content = sprintf(_("%1$s marked notice %2$s as a favorite."),
+        $act->content = sprintf(_m('%1$s marked notice %2$s as a favorite.'),
                                $profile->getBestName(),
                                $notice->uri);
 
@@ -799,10 +803,10 @@ class OStatusPlugin extends Plugin
                                   $notice->id,
                                   common_date_iso8601(time()));
         $act->time    = time();
-        $act->title   = _("Disfavor");
+        $act->title   = _m('Disfavor');
         // TRANS: Success message for remove a favorite notice through OStatus.
         // TRANS: %1$s is the unfavoring user's name, %2$s is URI to the no longer favored notice.
-        $act->content = sprintf(_("%1$s marked notice %2$s as no longer a favorite."),
+        $act->content = sprintf(_m('%1$s marked notice %2$s as no longer a favorite.'),
                                $profile->getBestName(),
                                $notice->uri);
 
@@ -876,8 +880,9 @@ class OStatusPlugin extends Plugin
             $action->elementStart('p', array('id' => 'entity_remote_subscribe',
                                              'class' => 'entity_subscribe'));
             $action->element('a', array('href' => common_local_url($target),
-                                        'class' => 'entity_remote_subscribe')
-                                , _m('Remote')); // @todo: i18n: Add translator hint for this text.
+                                        'class' => 'entity_remote_subscribe'),
+                                // TRANS: Link text for link to remote subscribe.
+                                _m('Remote'));
             $action->elementEnd('p');
             $action->elementEnd('div');
         }
@@ -916,6 +921,7 @@ class OStatusPlugin extends Plugin
                                   $profile->id,
                                   common_date_iso8601(time()));
         $act->time    = time();
+        // TRANS: Title for activity.
         $act->title   = _m("Profile update");
         // TRANS: Ping text for remote profile update through OStatus.
         // TRANS: %s is user that updated their profile.
@@ -948,7 +954,8 @@ class OStatusPlugin extends Plugin
                                         array('nickname' => $profileUser->nickname));
                 $output->element('a', array('href' => $url,
                                             'class' => 'entity_remote_subscribe'),
-                                 _m('Subscribe')); // @todo: i18n: Add context.
+                                  // TRANS: Link text for a user to subscribe to an OStatus user.
+                                 _m('Subscribe'));
                 $output->elementEnd('li');
             }
         }
@@ -962,9 +969,9 @@ class OStatusPlugin extends Plugin
                             'version' => STATUSNET_VERSION,
                             'author' => 'Evan Prodromou, James Walker, Brion Vibber, Zach Copley',
                             'homepage' => 'http://status.net/wiki/Plugin:OStatus',
-                            'rawdescription' =>
-                            _m('Follow people across social networks that implement '.
-                               '<a href="http://ostatus.org/">OStatus</a>.')); // @todo i18n: Add translator hint.
+                            // TRANS: Plugin description.
+                            'rawdescription' => _m('Follow people across social networks that implement '.
+                               '<a href="http://ostatus.org/">OStatus</a>.'));
 
         return true;
     }
diff --git a/plugins/OStatus/actions/groupsalmon.php b/plugins/OStatus/actions/groupsalmon.php
index 5094dccf0..3a3d63fe2 100644
--- a/plugins/OStatus/actions/groupsalmon.php
+++ b/plugins/OStatus/actions/groupsalmon.php
@@ -17,15 +17,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/**
- * @package OStatusPlugin
- * @author James Walker <james@status.net>
- */
-
 if (!defined('STATUSNET')) {
     exit(1);
 }
 
+/**
+ * @package OStatusPlugin
+ * @author James Walker <james@status.net>
+ */
 class GroupsalmonAction extends SalmonAction
 {
     var $group = null;
@@ -37,17 +36,20 @@ class GroupsalmonAction extends SalmonAction
         $id = $this->trimmed('id');
 
         if (!$id) {
-            $this->clientError(_('No ID.'));
+            // TRANS: Client error.
+            $this->clientError(_m('No ID.'));
         }
 
         $this->group = User_group::staticGet('id', $id);
 
         if (empty($this->group)) {
-            $this->clientError(_('No such group.'));
+            // TRANS: Client error.
+            $this->clientError(_m('No such group.'));
         }
 
         $oprofile = Ostatus_profile::staticGet('group_id', $id);
         if ($oprofile) {
+            // TRANS: Client error.
             $this->clientError(_m("Can't accept remote posts for a remote group."));
         }
 
@@ -57,7 +59,6 @@ class GroupsalmonAction extends SalmonAction
     /**
      * We've gotten a post event on the Salmon backchannel, probably a reply.
      */
-
     function handlePost()
     {
         // @fixme process all objects?
@@ -69,18 +70,20 @@ class GroupsalmonAction extends SalmonAction
         case ActivityObject::COMMENT:
             break;
         default:
+            // TRANS: Client exception.
             throw new ClientException("Can't handle that kind of post.");
         }
 
         // Notice must be to the attention of this group
-
         $context = $this->activity->context;
 
         if (empty($context->attention)) {
+            // TRANS: Client exception.
             throw new ClientException("Not to the attention of anyone.");
         } else {
             $uri = common_local_url('groupbyid', array('id' => $this->group->id));
             if (!in_array($uri, $context->attention)) {
+                // TRANS: Client exception.
                 throw new ClientException("Not to the attention of this group.");
             }
         }
@@ -116,14 +119,15 @@ class GroupsalmonAction extends SalmonAction
      *        currently we're doing the main logic in joingroup action
      *        and so have to repeat it here.
      */
-
     function handleJoin()
     {
         $oprofile = $this->ensureProfile();
         if (!$oprofile) {
+            // TRANS: Client error.
             $this->clientError(_m("Can't read profile to set up group membership."));
         }
         if ($oprofile->isGroup()) {
+            // TRANS: Client error.
             $this->clientError(_m("Groups can't join groups."));
         }
 
@@ -137,7 +141,7 @@ class GroupsalmonAction extends SalmonAction
         }
 
         if (Group_block::isBlocked($this->group, $profile)) {
-            $this->clientError(_('You have been blocked from that group by the admin.'), 403);
+            $this->clientError(_m('You have been blocked from that group by the admin.'), 403);
             return false;
         }
 
@@ -151,6 +155,7 @@ class GroupsalmonAction extends SalmonAction
                 //Event::handle('EndJoinGroup', array($this->group, $profile));
             //}
         } catch (Exception $e) {
+            // TRANS: Server error. %1$s is a profile URI, %2$s is a group nickname.
             $this->serverError(sprintf(_m('Could not join remote user %1$s to group %2$s.'),
                                        $oprofile->uri, $this->group->nickname));
         }
@@ -159,7 +164,6 @@ class GroupsalmonAction extends SalmonAction
     /**
      * A remote user left our group.
      */
-
     function handleLeave()
     {
         $oprofile = $this->ensureProfile();
@@ -180,10 +184,10 @@ class GroupsalmonAction extends SalmonAction
                 //Event::handle('EndLeaveGroup', array($this->group, $profile));
             //}
         } catch (Exception $e) {
+            // TRANS: Server error. %1$s is a profile URI, %2$s is a group nickname.
             $this->serverError(sprintf(_m('Could not remove remote user %1$s from group %2$s.'),
                                        $oprofile->uri, $this->group->nickname));
             return;
         }
     }
-
 }
diff --git a/plugins/OStatus/actions/hostmeta.php b/plugins/OStatus/actions/hostmeta.php
index 8ca07f916..db4c913e1 100644
--- a/plugins/OStatus/actions/hostmeta.php
+++ b/plugins/OStatus/actions/hostmeta.php
@@ -26,7 +26,6 @@ if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
 class HostMetaAction extends Action
 {
-
     function handle()
     {
         parent::handle();
diff --git a/plugins/OStatus/actions/ostatusgroup.php b/plugins/OStatus/actions/ostatusgroup.php
index 1861e866f..7db00ffbe 100644
--- a/plugins/OStatus/actions/ostatusgroup.php
+++ b/plugins/OStatus/actions/ostatusgroup.php
@@ -72,13 +72,16 @@ class OStatusGroupAction extends OStatusSubAction
         $this->elementStart('ul', 'form_data');
         $this->elementStart('li');
         $this->input('profile',
+                     // TRANS: Field label.
                      _m('Join group'),
                      $this->profile_uri,
+                     // TRANS: Tooltip for field label "Join group".
                      _m("OStatus group's address, like http://example.net/group/nickname."));
         $this->elementEnd('li');
         $this->elementEnd('ul');
 
-        $this->submit('validate', _m('Continue'));
+        // TRANS: Button text.
+        $this->submit('validate', _m('BUTTON','Continue'));
 
         $this->elementEnd('fieldset');
 
@@ -156,7 +159,6 @@ class OStatusGroupAction extends OStatusSubAction
      *
      * @return string Title of the page
      */
-
     function title()
     {
         // TRANS: Page title for OStatus remote group join form
@@ -168,9 +170,9 @@ class OStatusGroupAction extends OStatusSubAction
      *
      * @return instructions for use
      */
-
     function getInstructions()
     {
+        // TRANS: Instructions.
         return _m('You can subscribe to groups from other supported sites. Paste the group\'s profile URI below:');
     }
 
diff --git a/plugins/OStatus/actions/ostatusinit.php b/plugins/OStatus/actions/ostatusinit.php
index 0c991aba9..f576823e3 100644
--- a/plugins/OStatus/actions/ostatusinit.php
+++ b/plugins/OStatus/actions/ostatusinit.php
@@ -27,7 +27,6 @@ if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
 class OStatusInitAction extends Action
 {
-
     var $nickname;
     var $group;
     var $profile;
@@ -38,6 +37,7 @@ class OStatusInitAction extends Action
         parent::prepare($args);
 
         if (common_logged_in()) {
+            // TRANS: Client error.
             $this->clientError(_m('You can use the local subscription!'));
             return false;
         }
@@ -78,6 +78,7 @@ class OStatusInitAction extends Action
             $this->xw->startDocument('1.0', 'UTF-8');
             $this->elementStart('html');
             $this->elementStart('head');
+            // TRANS: Form title.
             $this->element('title', null, _m('Subscribe to user'));
             $this->elementEnd('head');
             $this->elementStart('body');
@@ -92,11 +93,15 @@ class OStatusInitAction extends Action
     function showContent()
     {
         if ($this->group) {
+            // TRANS: Form legend.
             $header = sprintf(_m('Join group %s'), $this->group);
-            $submit = _m('Join');
+            // TRANS: Button text.
+            $submit = _m('BUTTON','Join');
         } else {
+            // TRANS: Form legend.
             $header = sprintf(_m('Subscribe to %s'), $this->nickname);
-            $submit = _m('Subscribe');
+            // TRANS: Button text.
+            $submit = _m('BUTTON','Subscribe');
         }
         $this->elementStart('form', array('id' => 'form_ostatus_connect',
                                           'method' => 'post',
@@ -108,12 +113,15 @@ class OStatusInitAction extends Action
 
         $this->elementStart('ul', 'form_data');
         $this->elementStart('li', array('id' => 'ostatus_nickname'));
+        // TRANS: Field label.
         $this->input('nickname', _m('User nickname'), $this->nickname,
                      _m('Nickname of the user you want to follow.'));
         $this->hidden('group', $this->group); // pass-through for magic links
         $this->elementEnd('li');
         $this->elementStart('li', array('id' => 'ostatus_profile'));
+        // TRANS: Field label.
         $this->input('profile', _m('Profile Account'), $this->profile,
+                      // TRANS: Tooltip for field label "Profile Account".
                      _m('Your account id (e.g. user@identi.ca).'));
         $this->elementEnd('li');
         $this->elementEnd('ul');
@@ -135,6 +143,7 @@ class OStatusInitAction extends Action
         } elseif (strpos($this->profile, '@') !== false) {
             $this->connectWebfinger($this->profile);
         } else {
+            // TRANS: Client error.
             $this->clientError(_m("Must provide a remote profile."));
         }
     }
@@ -146,6 +155,7 @@ class OStatusInitAction extends Action
         $disco = new Discovery;
         $result = $disco->lookup($acct);
         if (!$result) {
+            // TRANS: Client error.
             $this->clientError(_m("Couldn't look up OStatus account profile."));
         }
 
@@ -158,6 +168,7 @@ class OStatusInitAction extends Action
             }
 
         }
+        // TRANS: Client error.
         $this->clientError(_m("Couldn't confirm remote profile address."));
     }
 
@@ -183,6 +194,7 @@ class OStatusInitAction extends Action
             if ($user) {
                 return common_local_url('userbyid', array('id' => $user->id));
             } else {
+                // TRANS: Client error.
                 $this->clientError("No such user.");
             }
         } else if ($this->group) {
@@ -190,16 +202,18 @@ class OStatusInitAction extends Action
             if ($group) {
                 return common_local_url('groupbyid', array('id' => $group->group_id));
             } else {
+                // TRANS: Client error.
                 $this->clientError("No such group.");
             }
         } else {
+            // TRANS: Client error.
             $this->clientError("No local user or group nickname provided.");
         }
     }
 
     function title()
     {
+      // TRANS: Page title.
       return _m('OStatus Connect');
     }
-
 }
diff --git a/plugins/OStatus/actions/ostatussub.php b/plugins/OStatus/actions/ostatussub.php
index 4cbd7d034..493b51965 100644
--- a/plugins/OStatus/actions/ostatussub.php
+++ b/plugins/OStatus/actions/ostatussub.php
@@ -62,13 +62,15 @@ class OStatusSubAction extends Action
         $this->elementStart('ul', 'form_data');
         $this->elementStart('li');
         $this->input('profile',
+                     // TRANS: Field label for a field that takes an OStatus user address.
                      _m('Subscribe to'),
                      $this->profile_uri,
-                     _m("OStatus user's address, like nickname@example.com or http://example.net/nickname"));  // @todo i18n FIXME: needs context/translator hint.
+                     // TRANS: Tooltip for field label "Subscribe to".
+                     _m('OStatus user\'s address, like nickname@example.com or http://example.net/nickname'));
         $this->elementEnd('li');
         $this->elementEnd('ul');
-
-        $this->submit('validate', _m('Continue')); // @todo i18n FIXME: needs context/translator hint.
+        // TRANS: Button text.
+        $this->submit('validate', _m('BUTTON','Continue'));
 
         $this->elementEnd('fieldset');
 
@@ -103,10 +105,14 @@ class OStatusSubAction extends Action
         $this->hidden('profile', $this->profile_uri);
         if ($this->oprofile->isGroup()) {
             $this->submit('submit', _m('Join'), 'submit', null,
-                         _m('Join this group')); // @todo i18n FIXME: needs context/translator hint.
+                         // TRANS: Button text.
+                         // TRANS: Tooltip for button "Join".
+                         _m('BUTTON','Join this group'));
         } else {
-            $this->submit('submit', _m('Confirm'), 'submit', null,
-                         _m('Subscribe to this user')); // @todo i18n FIXME: needs context/translator hint.
+            // TRANS: Button text.
+            $this->submit('submit', _m('BUTTON','Confirm'), 'submit', null,
+                         // TRANS: Tooltip for button "Confirm".
+                         _m('Subscribe to this user'));
         }
         $this->elementEnd('fieldset');
         $this->elementEnd('form');
@@ -156,7 +162,7 @@ class OStatusSubAction extends Action
 
         $this->elementStart('div', 'entity_profile vcard');
         $this->elementStart('dl', 'entity_depiction');
-        $this->element('dt', null, _('Photo'));
+        $this->element('dt', null, _m('Photo'));
         $this->elementStart('dd');
         $this->element('img', array('src' => $avatar,
                                     'class' => 'photo avatar',
@@ -167,7 +173,7 @@ class OStatusSubAction extends Action
         $this->elementEnd('dl');
 
         $this->elementStart('dl', 'entity_nickname');
-        $this->element('dt', null, _('Nickname'));
+        $this->element('dt', null, _m('Nickname'));
         $this->elementStart('dd');
         $hasFN = ($fullname !== '') ? 'nickname' : 'fn nickname';
         $this->elementStart('a', array('href' => $profile,
@@ -188,7 +194,7 @@ class OStatusSubAction extends Action
         }
         if (!is_null($location)) {
             $this->elementStart('dl', 'entity_location');
-            $this->element('dt', null, _('Location'));
+            $this->element('dt', null, _m('Location'));
             $this->elementStart('dd', 'label');
             $this->raw($location);
             $this->elementEnd('dd');
@@ -197,7 +203,7 @@ class OStatusSubAction extends Action
 
         if (!is_null($homepage)) {
             $this->elementStart('dl', 'entity_url');
-            $this->element('dt', null, _('URL'));
+            $this->element('dt', null, _m('URL'));
             $this->elementStart('dd');
             $this->elementStart('a', array('href' => $homepage,
                                                 'class' => 'url'));
@@ -209,7 +215,7 @@ class OStatusSubAction extends Action
 
         if (!is_null($note)) {
             $this->elementStart('dl', 'entity_note');
-            $this->element('dt', null, _('Note'));
+            $this->element('dt', null, _m('Note'));
             $this->elementStart('dd', 'note');
             $this->raw($note);
             $this->elementEnd('dd');
@@ -244,31 +250,39 @@ class OStatusSubAction extends Action
             } else if (Validate::uri($this->profile_uri)) {
                 $this->oprofile = Ostatus_profile::ensureProfileURL($this->profile_uri);
             } else {
+                // TRANS: Error text.
                 $this->error = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.");
                 common_debug('Invalid address format.', __FILE__);
                 return false;
             }
             return true;
         } catch (FeedSubBadURLException $e) {
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.");
             common_debug('Invalid URL or could not reach server.', __FILE__);
         } catch (FeedSubBadResponseException $e) {
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
             common_debug('Cannot read feed; server returned error.', __FILE__);
         } catch (FeedSubEmptyException $e) {
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
             common_debug('Cannot read feed; server returned an empty page.', __FILE__);
         } catch (FeedSubBadHTMLException $e) {
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
             common_debug('Bad HTML, could not find feed link.', __FILE__);
         } catch (FeedSubNoFeedException $e) {
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
             common_debug('Could not find a feed linked from this URL.', __FILE__);
         } catch (FeedSubUnrecognizedTypeException $e) {
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that feed. Please try that OStatus address again later.");
             common_debug('Not a recognized feed type.', __FILE__);
         } catch (Exception $e) {
             // Any new ones we forgot about
+            // TRANS: Error text.
             $this->error = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.");
             common_debug(sprintf('Bad feed URL: %s %s', get_class($e), $e->getMessage()), __FILE__);
         }
@@ -350,7 +364,7 @@ class OStatusSubAction extends Action
         // CSRF protection
         $token = $this->trimmed('token');
         if (!$token || $token != common_session_token()) {
-            $this->showForm(_('There was a problem with your session token. '.
+            $this->showForm(_m('There was a problem with your session token. '.
                               'Try again, please.'));
             return;
         }
@@ -377,6 +391,7 @@ class OStatusSubAction extends Action
             $this->xw->startDocument('1.0', 'UTF-8');
             $this->elementStart('html');
             $this->elementStart('head');
+            // TRANS: Form title.
             $this->element('title', null, _m('Subscribe to user'));
             $this->elementEnd('head');
             $this->elementStart('body');
@@ -408,6 +423,7 @@ class OStatusSubAction extends Action
 
     function getInstructions()
     {
+        // TRANS: Instructions.
         return _m('You can subscribe to users from other supported sites. Paste their address or profile URI below:');
     }
 
@@ -426,7 +442,6 @@ class OStatusSubAction extends Action
      *
      * @return void
      */
-
     function showContent()
     {
         if ($this->oprofile) {
@@ -459,5 +474,4 @@ class OStatusSubAction extends Action
     function showNoticeForm() {
         // nop
     }
-
 }
diff --git a/plugins/OStatus/actions/ownerxrd.php b/plugins/OStatus/actions/ownerxrd.php
index 3fcb982b8..9e84f72ec 100644
--- a/plugins/OStatus/actions/ownerxrd.php
+++ b/plugins/OStatus/actions/ownerxrd.php
@@ -34,7 +34,7 @@ class OwnerxrdAction extends XrdAction
         $this->user = User::siteOwner();
 
         if (!$this->user) {
-            $this->clientError(_('No such user.'), 404);
+            $this->clientError(_m('No such user.'), 404);
             return false;
         }
 
diff --git a/plugins/OStatus/actions/pushcallback.php b/plugins/OStatus/actions/pushcallback.php
index 6c6978745..701a39c16 100644
--- a/plugins/OStatus/actions/pushcallback.php
+++ b/plugins/OStatus/actions/pushcallback.php
@@ -24,7 +24,6 @@
 
 if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
 
-
 class PushCallbackAction extends Action
 {
     function handle()
@@ -46,13 +45,13 @@ class PushCallbackAction extends Action
         $feedid = $this->arg('feed');
         common_log(LOG_INFO, "POST for feed id $feedid");
         if (!$feedid) {
-            throw new ServerException('Empty or invalid feed id.', 400);
+            throw new ServerException(_m('Empty or invalid feed id.'), 400);
         }
 
         $feedsub = FeedSub::staticGet('id', $feedid);
         if (!$feedsub) {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ServerException('Unknown PuSH feed id ' . $feedid, 400);
+            // TRANS: Server exception. %s is a feed ID.
+            throw new ServerException(sprintf(_m('Unknown PuSH feed id %s'),$feedid), 400);
         }
 
         $hmac = '';
@@ -84,30 +83,31 @@ class PushCallbackAction extends Action
         $verify_token = $this->arg('hub_verify_token');
 
         if ($mode != 'subscribe' && $mode != 'unsubscribe') {
-            throw new ClientException("Bad hub.mode $mode", 404);
+            // TRANS: Client exception. %s is an invalid value for hub.mode.
+            throw new ClientException(sprintf(_m('Bad hub.mode "$s".',$mode)), 404);
         }
 
         $feedsub = FeedSub::staticGet('uri', $topic);
         if (!$feedsub) {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Bad hub.topic feed $topic.", 404);
+            // TRANS: Client exception. %s is an invalid feed name.
+            throw new ClientException(sprintf(_m('Bad hub.topic feed "%s".'),$topic), 404);
         }
 
         if ($feedsub->verify_token !== $verify_token) {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Bad hub.verify_token $token for $topic.", 404);
+            // TRANS: Client exception. %1$s the invalid token, %2$s is the topic for which the invalid token was given.
+            throw new ClientException(sprintf(_m('Bad hub.verify_token %1$s for %2$s.'),$token,$topic), 404);
         }
 
         if ($mode == 'subscribe') {
             // We may get re-sub requests legitimately.
             if ($feedsub->sub_state != 'subscribe' && $feedsub->sub_state != 'active') {
-                // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-                throw new ClientException("Unexpected subscribe request for $topic.", 404);
+                // TRANS: Client exception. %s is an invalid topic.
+                throw new ClientException(sprintf(_m('Unexpected subscribe request for %s.'),$topic), 404);
             }
         } else {
             if ($feedsub->sub_state != 'unsubscribe') {
-                // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-                throw new ClientException("Unexpected unsubscribe request for $topic.", 404);
+                // TRANS: Client exception. %s is an invalid topic.
+                throw new ClientException(sprintf(_m('Unexpected unsubscribe request for %s.'),$topic), 404);
             }
         }
 
diff --git a/plugins/OStatus/actions/pushhub.php b/plugins/OStatus/actions/pushhub.php
index 6909b8539..68035ab5c 100644
--- a/plugins/OStatus/actions/pushhub.php
+++ b/plugins/OStatus/actions/pushhub.php
@@ -62,11 +62,11 @@ class PushHubAction extends Action
             $this->subunsub($mode);
             break;
         case "publish":
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Publishing outside feeds not supported.", 400);
+            // TRANS: Client exception.
+            throw new ClientException(_m('Publishing outside feeds not supported.'), 400);
         default:
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Unrecognized mode '$mode'.", 400);
+            // TRANS: Client exception. %s is a mode.
+            throw new ClientException(sprintf(_m('Unrecognized mode "%s".'),$mode), 400);
         }
     }
 
@@ -85,28 +85,28 @@ class PushHubAction extends Action
 
         $topic = $this->argUrl('hub.topic');
         if (!$this->recognizedFeed($topic)) {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Unsupported hub.topic $topic; this hub only serves local user and group Atom feeds.");
+            // TRANS: Client exception. %s is a topic.
+            throw new ClientException(sprintf(_m('Unsupported hub.topic %s this hub only serves local user and group Atom feeds.'),$topic));
         }
 
         $verify = $this->arg('hub.verify'); // @fixme may be multiple
         if ($verify != 'sync' && $verify != 'async') {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Invalid hub.verify $verify; must be sync or async.");
+            // TRANS: Client exception.
+            throw new ClientException(sprintf(_m('Invalid hub.verify "%s". It must be sync or async.'),$verify));
         }
 
         $lease = $this->arg('hub.lease_seconds', null);
         if ($mode == 'subscribe' && $lease != '' && !preg_match('/^\d+$/', $lease)) {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Invalid hub.lease $lease; must be empty or positive integer.");
+            // TRANS: Client exception.
+            throw new ClientException(sprintf(_m('Invalid hub.lease "%s". It must be empty or positive integer.'),$lease));
         }
 
         $token = $this->arg('hub.verify_token', null);
 
         $secret = $this->arg('hub.secret', null);
         if ($secret != '' && strlen($secret) >= 200) {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Invalid hub.secret $secret; must be under 200 bytes.");
+            // TRANS: Client exception.
+            throw new ClientException(sprintf(_m('Invalid hub.secret "%s". It must be under 200 bytes.'),$secret));
         }
 
         $sub = HubSub::staticGet($topic, $callback);
@@ -157,8 +157,8 @@ class PushHubAction extends Action
             if ($feed == $userFeed) {
                 $user = User::staticGet('id', $id);
                 if (!$user) {
-                    // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-                    throw new ClientException("Invalid hub.topic $feed; user doesn't exist.");
+                    // TRANS: Client exception.
+                    throw new ClientException(sprintt(_m('Invalid hub.topic "%s". User doesn\'t exist.'),$feed));
                 } else {
                     return true;
                 }
@@ -166,8 +166,8 @@ class PushHubAction extends Action
             if ($feed == $groupFeed) {
                 $user = User_group::staticGet('id', $id);
                 if (!$user) {
-                    // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-                    throw new ClientException("Invalid hub.topic $feed; group doesn't exist.");
+                    // TRANS: Client exception.
+                    throw new ClientException(sprintf(_m('Invalid hub.topic "%s". Group doesn\'t exist.'),$feed));
                 } else {
                     return true;
                 }
@@ -190,8 +190,9 @@ class PushHubAction extends Action
         if (Validate::uri($url, $params)) {
             return $url;
         } else {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new ClientException("Invalid URL passed for $arg: '$url'");
+            // TRANS: Client exception.
+            // TRANS: %1$s is this argument to the method this exception occurs in, %2$s is a URL.
+            throw new ClientException(sprintf(_m('Invalid URL passed for %1$s: "%2$s"'),$arg,$url));
         }
     }
 
diff --git a/plugins/OStatus/actions/usersalmon.php b/plugins/OStatus/actions/usersalmon.php
index 06a72bf02..e78c65330 100644
--- a/plugins/OStatus/actions/usersalmon.php
+++ b/plugins/OStatus/actions/usersalmon.php
@@ -17,15 +17,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-/**
- * @package OStatusPlugin
- * @author James Walker <james@status.net>
- */
-
 if (!defined('STATUSNET')) {
     exit(1);
 }
 
+/**
+ * @package OStatusPlugin
+ * @author James Walker <james@status.net>
+ */
 class UsersalmonAction extends SalmonAction
 {
     function prepare($args)
@@ -35,13 +34,13 @@ class UsersalmonAction extends SalmonAction
         $id = $this->trimmed('id');
 
         if (!$id) {
-            $this->clientError(_('No ID.'));
+            $this->clientError(_m('No ID.'));
         }
 
         $this->user = User::staticGet('id', $id);
 
         if (empty($this->user)) {
-            $this->clientError(_('No such user.'));
+            $this->clientError(_m('No such user.'));
         }
 
         return true;
@@ -78,20 +77,24 @@ class UsersalmonAction extends SalmonAction
         if (!empty($context->replyToID)) {
             $notice = Notice::staticGet('uri', $context->replyToID);
             if (empty($notice)) {
-                throw new ClientException("In reply to unknown notice");
+                // TRANS: Client exception.
+                throw new ClientException(_m('In reply to unknown notice.'));
             }
             if ($notice->profile_id != $this->user->id &&
                 !in_array($this->user->id, $notice->getReplies())) {
-                throw new ClientException("In reply to a notice not by this user and not mentioning this user");
+                // TRANS: Client exception.
+                throw new ClientException(_m('In reply to a notice not by this user and not mentioning this user.'));
             }
         } else if (!empty($context->attention)) {
             if (!in_array($this->user->uri, $context->attention) &&
                 !in_array(common_profile_url($this->user->nickname), $context->attention)) {
                 common_log(LOG_ERR, "{$this->user->uri} not in attention list (".implode(',', $context->attention).")");
-                throw new ClientException("To the attention of user(s) not including this one!");
+                // TRANS: Client exception.
+                throw new ClientException('To the attention of user(s), not including this one.');
             }
         } else {
-            throw new ClientException("Not to anyone in reply to anything!");
+            // TRANS: Client exception.
+            throw new ClientException('Not to anyone in reply to anything.');
         }
 
         $existing = Notice::staticGet('uri', $this->activity->objects[0]->id);
@@ -108,7 +111,6 @@ class UsersalmonAction extends SalmonAction
      * We've gotten a follow/subscribe notification from a remote user.
      * Save a subscription relationship for them.
      */
-
     function handleFollow()
     {
         $oprofile = $this->ensureProfile();
@@ -152,11 +154,13 @@ class UsersalmonAction extends SalmonAction
                                    'notice_id' => $notice->id));
 
         if (!empty($old)) {
-            throw new ClientException("We already know that's a fave!");
+            // TRANS: Client exception.
+            throw new ClientException(_('This is already a favorite.'));
         }
 
         if (!Fave::addNew($profile, $notice)) {
-            throw new ClientException("Could not save new favorite.");
+           // TRANS: Client exception.
+           throw new ClientException(_m('Could not save new favorite.'));
         }
     }
 
@@ -172,7 +176,8 @@ class UsersalmonAction extends SalmonAction
         $fave = Fave::pkeyGet(array('user_id' => $profile->id,
                                    'notice_id' => $notice->id));
         if (empty($fave)) {
-            throw new ClientException("Notice wasn't favorited!");
+            // TRANS: Client exception.
+            throw new ClientException(_('Notice wasn\'t favorited!'));
         }
 
         $fave->delete();
@@ -186,7 +191,8 @@ class UsersalmonAction extends SalmonAction
     function getNotice($object)
     {
         if (!$object) {
-            throw new ClientException("Can't favorite/unfavorite without an object.");
+            // TRANS: Client exception.
+            throw new ClientException(_m('Can\'t favorite/unfavorite without an object.'));
         }
 
         switch ($object->type) {
@@ -197,20 +203,22 @@ class UsersalmonAction extends SalmonAction
         case ActivityObject::COMMENT:
             break;
         default:
-            throw new ClientException("Can't handle that kind of object for liking/faving.");
+            // TRANS: Client exception.
+            throw new ClientException(_m('Can\'t handle that kind of object for liking/faving.'));
         }
 
         $notice = Notice::staticGet('uri', $object->id);
 
         if (empty($notice)) {
-            throw new ClientException("Notice with ID $object->id unknown.");
+            // TRANS: Client exception. %s is an object ID.
+            throw new ClientException(sprintf(_m('Notice with ID %s unknown.'),$object->id));
         }
 
         if ($notice->profile_id != $this->user->id) {
-            throw new ClientException("Notice with ID $object->id not posted by $this->user->id.");
+            // TRANS: Client exception. %1$s is a notice ID, %2$s is a user ID.
+            throw new ClientException(sprintf(_m('Notice with ID %1$s not posted by %2$s.'),$object->id,$this->user->id));
         }
 
         return $notice;
     }
-
 }
diff --git a/plugins/OStatus/actions/userxrd.php b/plugins/OStatus/actions/userxrd.php
index dd720568b..9aa7c0306 100644
--- a/plugins/OStatus/actions/userxrd.php
+++ b/plugins/OStatus/actions/userxrd.php
@@ -17,16 +17,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+if (!defined('STATUSNET')) { exit(1); }
+
 /**
  * @package OStatusPlugin
  * @maintainer James Walker <james@status.net>
  */
-
-if (!defined('STATUSNET')) { exit(1); }
-
 class UserxrdAction extends XrdAction
 {
-
     function prepare($args)
     {
         parent::prepare($args);
@@ -46,7 +44,7 @@ class UserxrdAction extends XrdAction
             $this->user = User::staticGet('uri', $this->uri);
         }
         if (!$this->user) {
-            $this->clientError(_('No such user.'), 404);
+            $this->clientError(_m('No such user.'), 404);
             return false;
         }
 
diff --git a/plugins/OStatus/classes/FeedSub.php b/plugins/OStatus/classes/FeedSub.php
index 6f9e0856a..58beec673 100644
--- a/plugins/OStatus/classes/FeedSub.php
+++ b/plugins/OStatus/classes/FeedSub.php
@@ -39,7 +39,6 @@ PuSH subscription flow:
         hub sends us updates via POST
 
 */
-
 class FeedDBException extends FeedSubException
 {
     public $obj;
@@ -88,7 +87,6 @@ class FeedSub extends Memcached_DataObject
      *
      * @return array array of column definitions
      */
-
     function table()
     {
         return array('id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
@@ -143,7 +141,6 @@ class FeedSub extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keys()
     {
         return array_keys($this->keyTypes());
@@ -157,7 +154,6 @@ class FeedSub extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keyTypes()
     {
         return array('id' => 'K', 'uri' => 'U');
@@ -249,7 +245,7 @@ class FeedSub extends Memcached_DataObject
                 // We'll never actually get updates in this mode.
                 return true;
             } else {
-                throw new ServerException("Attempting to start PuSH subscription for feed with no hub.");
+                throw new ServerException(_m('Attempting to start PuSH subscription for feed with no hub.'));
             }
         }
 
@@ -279,7 +275,7 @@ class FeedSub extends Memcached_DataObject
                 // We'll never actually get updates in this mode.
                 return true;
             } else {
-                throw new ServerException("Attempting to end PuSH subscription for feed with no hub.");
+                throw new ServerException(_m('Attempting to end PuSH subscription for feed with no hub.'));
             }
         }
 
@@ -500,5 +496,4 @@ class FeedSub extends Memcached_DataObject
         }
         return false;
     }
-
 }
diff --git a/plugins/OStatus/classes/HubSub.php b/plugins/OStatus/classes/HubSub.php
index e01ae4e79..825d36ebd 100644
--- a/plugins/OStatus/classes/HubSub.php
+++ b/plugins/OStatus/classes/HubSub.php
@@ -54,7 +54,6 @@ class HubSub extends Memcached_DataObject
      *
      * @return array array of column definitions
      */
-
     function table()
     {
         return array('hashkey' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
@@ -112,7 +111,6 @@ class HubSub extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keyTypes()
     {
         return array('hashkey' => 'K');
@@ -206,8 +204,8 @@ class HubSub extends Memcached_DataObject
         if ($status >= 200 && $status < 300) {
             common_log(LOG_INFO, "Verified $mode of $this->callback:$this->topic");
         } else {
-            // @todo i18n FIXME: add i18n and use sprintf for parameter.
-            throw new ClientException("Hub subscriber verification returned HTTP $status");
+            // TRANS: Client exception. %s is a HTTP status code.
+            throw new ClientException(sprintf(_m('Hub subscriber verification returned HTTP %s.'),$status));
         }
 
         $old = HubSub::staticGet($this->topic, $this->callback);
@@ -353,10 +351,9 @@ class HubSub extends Memcached_DataObject
         if ($response->isOk()) {
             return true;
         } else {
-            throw new Exception("Callback returned status: " .
-                                $response->getStatus() .
-                                "; body: " .
-                                trim($response->getBody()));
+            // TRANS: Exception. %1$s is a response status code, %2$s is the body of the response.
+            throw new Exception(sprintf(_m('Callback returned status: %1$s. Body: %2$s'),
+                                $response->getStatus(),trim($response->getBody())));
         }
     }
 }
diff --git a/plugins/OStatus/classes/Magicsig.php b/plugins/OStatus/classes/Magicsig.php
index e39a6d8f7..20025c37a 100644
--- a/plugins/OStatus/classes/Magicsig.php
+++ b/plugins/OStatus/classes/Magicsig.php
@@ -31,7 +31,6 @@ require_once 'Crypt/RSA.php';
 
 class Magicsig extends Memcached_DataObject
 {
-
     const PUBLICKEYREL = 'magic-public-key';
 
     public $__table = 'magicsig';
@@ -86,7 +85,6 @@ class Magicsig extends Memcached_DataObject
                                    64, false));
     }
 
-
     function keys()
     {
         return array_keys($this->keyTypes());
@@ -126,7 +124,6 @@ class Magicsig extends Memcached_DataObject
         $this->insert();
     }
 
-
     public function toString($full_pair = true)
     {
         $mod = Magicsig::base64_url_encode($this->publicKey->modulus->toBytes());
@@ -197,7 +194,6 @@ class Magicsig extends Memcached_DataObject
         case 'RSA-SHA256':
             return 'sha256';
         }
-
     }
 
     public function sign($bytes)
diff --git a/plugins/OStatus/classes/Ostatus_profile.php b/plugins/OStatus/classes/Ostatus_profile.php
index 11ca67b25..402d1967f 100644
--- a/plugins/OStatus/classes/Ostatus_profile.php
+++ b/plugins/OStatus/classes/Ostatus_profile.php
@@ -21,7 +21,6 @@
  * @package OStatusPlugin
  * @maintainer Brion Vibber <brion@status.net>
  */
-
 class Ostatus_profile extends Memcached_DataObject
 {
     public $__table = 'ostatus_profile';
@@ -51,7 +50,6 @@ class Ostatus_profile extends Memcached_DataObject
      *
      * @return array array of column definitions
      */
-
     function table()
     {
         return array('uri' => DB_DATAOBJECT_STR + DB_DATAOBJECT_NOTNULL,
@@ -92,7 +90,6 @@ class Ostatus_profile extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keys()
     {
         return array_keys($this->keyTypes());
@@ -106,7 +103,6 @@ class Ostatus_profile extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keyTypes()
     {
         return array('uri' => 'K', 'profile_id' => 'U', 'group_id' => 'U', 'feeduri' => 'U');
@@ -188,11 +184,11 @@ class Ostatus_profile extends Memcached_DataObject
         } else if ($this->group_id && !$this->profile_id) {
             return true;
         } else if ($this->group_id && $this->profile_id) {
-            // @todo i18n FIXME: use sprintf and add i18n.
-            throw new ServerException("Invalid ostatus_profile state: both group and profile IDs set for $this->uri.");
+            // TRANS: Server exception.
+            throw new ServerException(sprintf(_m('Invalid ostatus_profile state: both group and profile IDs set for %s.'),$this->uri));
         } else {
-            // @todo i18n FIXME: use sprintf and add i18n.
-            throw new ServerException("Invalid ostatus_profile state: both group and profile IDs empty for $this->uri.");
+            // TRANS: Server exception.
+            throw new ServerException(sprintf(_m('Invalid ostatus_profile state: both group and profile IDs empty for %s.'),$this->uri));
         }
     }
 
@@ -280,7 +276,9 @@ class Ostatus_profile extends Memcached_DataObject
             if ($type == 'object') {
                 $type = get_class($actor);
             }
-            throw new ServerException("Invalid actor passed to " . __METHOD__ . ": " . $type);
+            // TRANS: Server exception.
+            // TRANS: %1$s is the method name the exception occured in, %2$s is the actor type.
+            throw new ServerException(sprintf(_m('Invalid actor passed to %1$s: %2$s.'),__METHOD__,$type));
         }
         if ($object == null) {
             $object = $this;
@@ -372,8 +370,8 @@ class Ostatus_profile extends Memcached_DataObject
         } else if ($entry instanceof Notice) {
             return $preamble . $entry->asAtomEntry(true, true);
         } else {
-            // @todo i18n FIXME: use sprintf and add i18n.
-            throw new ServerException("Invalid type passed to Ostatus_profile::notify; must be XML string or Activity entry.");
+            // TRANS: Server exception.
+            throw new ServerException(_m('Invalid type passed to Ostatus_profile::notify. It must be XML string or Activity entry.'));
         }
     }
 
@@ -403,7 +401,7 @@ class Ostatus_profile extends Memcached_DataObject
         } else if ($feed->localName == 'rss') { // @fixme check namespace
             $this->processRssFeed($feed, $source);
         } else {
-            throw new Exception("Unknown feed format.");
+            throw new Exception(_m('Unknown feed format.'));
         }
     }
 
@@ -426,7 +424,7 @@ class Ostatus_profile extends Memcached_DataObject
         $channels = $rss->getElementsByTagName('channel');
 
         if ($channels->length == 0) {
-            throw new Exception("RSS feed without a channel.");
+            throw new Exception(_m('RSS feed without a channel.'));
         } else if ($channels->length > 1) {
             common_log(LOG_WARNING, __METHOD__ . ": more than one channel in an RSS feed");
         }
@@ -470,7 +468,8 @@ class Ostatus_profile extends Memcached_DataObject
                 }
                 break;
             default:
-                throw new ClientException("Can't handle that kind of post.");
+                // TRANS: Client exception.
+                throw new ClientException(_m('Can\'t handle that kind of post.'));
             }
 
             Event::handle('EndHandleFeedEntry', array($activity));
@@ -552,8 +551,8 @@ class Ostatus_profile extends Memcached_DataObject
             $sourceContent = $note->title;
         } else {
             // @fixme fetch from $sourceUrl?
-            // @todo i18n FIXME: use sprintf and add i18n.
-            throw new ClientException("No content for notice {$sourceUri}.");
+            // TRANS: Client exception. %s is a source URL.
+            throw new ClientException(sprintf(_m('No content for notice %s.'),$sourceUri));
         }
 
         // Get (safe!) HTML and text versions of the content
@@ -584,14 +583,17 @@ class Ostatus_profile extends Memcached_DataObject
 
                 // We mark up the attachment link specially for the HTML output
                 // so we can fold-out the full version inline.
+
+                // TRANS: Shown when a notice is longer than supported and/or when attachments are present.
+                $showMoreText = _m('Show more');
                 $attachUrl = common_local_url('attachment',
                                               array('attachment' => $attachment->id));
                 $rendered = common_render_text($shortSummary) .
                             '<a href="' . htmlspecialchars($attachUrl) .'"'.
                             ' class="attachment more"' .
-                            ' title="'. htmlspecialchars(_m('Show more')) . '">' .
+                            ' title="'. htmlspecialchars($showMoreText) . '">' .
                             '&#8230;' .
-                            '</a>'; // @todo i18n FIXME: add translator hint/context.
+                            '</a>';
             }
         }
 
@@ -775,8 +777,8 @@ class Ostatus_profile extends Memcached_DataObject
         $response = $client->get($profile_url);
 
         if (!$response->isOk()) {
-            // @todo i18n FIXME: use sprintf and add i18n.
-            throw new Exception("Could not reach profile page: " . $profile_url);
+            // TRANS: Exception. %s is a profile URL.
+            throw new Exception(sprintf(_m('Could not reach profile page %s.'),$profile_url));
         }
 
         // Check if we have a non-canonical URL
@@ -833,8 +835,8 @@ class Ostatus_profile extends Memcached_DataObject
             return self::ensureFeedURL($feedurl, $hints);
         }
 
-        // @todo i18n FIXME: use sprintf and add i18n.
-        throw new Exception("Could not find a feed URL for profile page " . $finalUrl);
+        // TRANS: Exception.
+        throw new Exception(sprintf(_m('Could not find a feed URL for profile page %s.'),$finalUrl));
     }
 
     /**
@@ -866,7 +868,7 @@ class Ostatus_profile extends Memcached_DataObject
         $user = User::staticGet('id', $profile->id);
 
         if (!empty($user)) {
-            // @todo i18n FIXME: use sprintf and add i18n.
+            // @todo i18n FIXME: use sprintf and add i18n (?)
             throw new OStatusShadowException($profile, "'$profile_url' is the profile for local user '{$user->nickname}'.");
         }
 
@@ -971,8 +973,7 @@ class Ostatus_profile extends Memcached_DataObject
         }
 
         // XXX: make some educated guesses here
-
-        throw new FeedSubException("Can't find enough profile information to make a feed.");
+        throw new FeedSubException(_m('Can\'t find enough profile information to make a feed.'));
     }
 
     /**
@@ -1270,13 +1271,13 @@ class Ostatus_profile extends Memcached_DataObject
 
         $user = User::staticGet('uri', $homeuri);
         if ($user) {
-            // @todo i18n FIXME: add i18n.
-            throw new Exception("Local user can't be referenced as remote.");
+            // TRANS: Exception.
+            throw new Exception(_m('Local user can\'t be referenced as remote.'));
         }
 
         if (OStatusPlugin::localGroupFromUrl($homeuri)) {
-            // @todo i18n FIXME: add i18n.
-            throw new Exception("Local group can't be referenced as remote.");
+            // TRANS: Exception.
+            throw new Exception(_m('Local group can\'t be referenced as remote.'));
         }
 
         if (array_key_exists('feedurl', $hints)) {
@@ -1327,8 +1328,8 @@ class Ostatus_profile extends Memcached_DataObject
 
             $oprofile->profile_id = $profile->insert();
             if (!$oprofile->profile_id) {
-                // @todo i18n FIXME: add i18n.
-                throw new ServerException("Can't save local profile.");
+            // TRANS: Exception.
+                throw new ServerException(_m('Can\'t save local profile.'));
             }
         } else {
             $group = new User_group();
@@ -1338,16 +1339,16 @@ class Ostatus_profile extends Memcached_DataObject
 
             $oprofile->group_id = $group->insert();
             if (!$oprofile->group_id) {
-                // @todo i18n FIXME: add i18n.
-                throw new ServerException("Can't save local profile.");
+                // TRANS: Exception.
+                throw new ServerException(_m('Can\'t save local profile.'));
             }
         }
 
         $ok = $oprofile->insert();
 
         if (!$ok) {
-            // @todo i18n FIXME: add i18n.
-            throw new ServerException("Can't save OStatus profile.");
+            // TRANS: Exception.
+            throw new ServerException(_m('Can\'t save OStatus profile.'));
         }
 
         $avatar = self::getActivityObjectAvatar($object, $hints);
@@ -1605,8 +1606,8 @@ class Ostatus_profile extends Memcached_DataObject
         if ($uri !== false) {
             if (is_null($uri)) {
                 // Negative cache entry
-                // @todo i18n FIXME: add i18n.
-                throw new Exception('Not a valid webfinger address.');
+                // TRANS: Exception.
+                throw new Exception(_m('Not a valid webfinger address.'));
             }
             $oprofile = Ostatus_profile::staticGet('uri', $uri);
             if (!empty($oprofile)) {
@@ -1633,8 +1634,8 @@ class Ostatus_profile extends Memcached_DataObject
             // Save negative cache entry so we don't waste time looking it up again.
             // @fixme distinguish temporary failures?
             self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), null);
-            // @todo i18n FIXME: add i18n.
-            throw new Exception('Not a valid webfinger address.');
+                // TRANS: Exception.
+            throw new Exception(_m('Not a valid webfinger address.'));
         }
 
         $hints = array('webfinger' => $addr);
@@ -1715,8 +1716,8 @@ class Ostatus_profile extends Memcached_DataObject
 
             if (!$profile_id) {
                 common_log_db_error($profile, 'INSERT', __FILE__);
-                // @todo i18n FIXME: add i18n and use sprintf for parameter.
-                throw new Exception("Couldn't save profile for '$addr'.");
+                // TRANS: Exception. %s is a webfinger address.
+                throw new Exception(sprintf(_m('Couldn\'t save profile for "%s".'),$addr));
             }
 
             $oprofile = new Ostatus_profile();
@@ -1734,16 +1735,16 @@ class Ostatus_profile extends Memcached_DataObject
 
             if (!$result) {
                 common_log_db_error($oprofile, 'INSERT', __FILE__);
-                // @todo i18n FIXME: add i18n and use sprintf for parameter.
-                throw new Exception("Couldn't save ostatus_profile for '$addr'.");
+                // TRANS: Exception. %s is a webfinger address.
+                throw new Exception(sprintf(_m('Couldn\'t save ostatus_profile for "%s".'),$addr));
             }
 
             self::cacheSet(sprintf('ostatus_profile:webfinger:%s', $addr), $oprofile->uri);
             return $oprofile;
         }
 
-        // @todo i18n FIXME: add i18n and use sprintf for parameter.
-        throw new Exception("Couldn't find a valid profile for '$addr'");
+        // TRANS: Exception. %s is a webfinger address.
+        throw new Exception(sprintf(_m('Couldn\'t find a valid profile for "%s".'),$addr));
     }
 
     /**
@@ -1785,7 +1786,7 @@ class Ostatus_profile extends Memcached_DataObject
 
         if ($file_id === false) {
             common_log_db_error($file, "INSERT", __FILE__);
-            throw new ServerException(_('Could not store HTML content of long post as file.'));
+            throw new ServerException(_m('Could not store HTML content of long post as file.'));
         }
 
         return $file;
diff --git a/plugins/OStatus/classes/Ostatus_source.php b/plugins/OStatus/classes/Ostatus_source.php
index e6ce7d442..b76bbce56 100644
--- a/plugins/OStatus/classes/Ostatus_source.php
+++ b/plugins/OStatus/classes/Ostatus_source.php
@@ -21,7 +21,6 @@
  * @package OStatusPlugin
  * @maintainer Brion Vibber <brion@status.net>
  */
-
 class Ostatus_source extends Memcached_DataObject
 {
     public $__table = 'ostatus_source';
@@ -43,7 +42,6 @@ class Ostatus_source extends Memcached_DataObject
      *
      * @return array array of column definitions
      */
-
     function table()
     {
         return array('notice_id' => DB_DATAOBJECT_INT + DB_DATAOBJECT_NOTNULL,
@@ -69,7 +67,6 @@ class Ostatus_source extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keys()
     {
         return array_keys($this->keyTypes());
@@ -83,7 +80,6 @@ class Ostatus_source extends Memcached_DataObject
      *
      * @return array key definitions
      */
-
     function keyTypes()
     {
         return array('notice_id' => 'K');
diff --git a/plugins/OStatus/lib/discovery.php b/plugins/OStatus/lib/discovery.php
index 04c672720..905ece2ca 100644
--- a/plugins/OStatus/lib/discovery.php
+++ b/plugins/OStatus/lib/discovery.php
@@ -106,8 +106,8 @@ class Discovery
             }
         }
 
-        // @todo Needs i18n.
-        throw new Exception('Unable to find services for '. $id . '.');
+        // TRANS: Exception.
+        throw new Exception(sprintf(_m('Unable to find services for %s.'),$id));
     }
 
     public static function getService($links, $service) {
diff --git a/plugins/OStatus/lib/discoveryhints.php b/plugins/OStatus/lib/discoveryhints.php
index fa2ead732..a98f4a6d6 100644
--- a/plugins/OStatus/lib/discoveryhints.php
+++ b/plugins/OStatus/lib/discoveryhints.php
@@ -20,7 +20,6 @@
  */
 
 class DiscoveryHints {
-
     static function fromXRD($xrd)
     {
         $hints = array();
diff --git a/plugins/OStatus/lib/linkheader.php b/plugins/OStatus/lib/linkheader.php
index cd78d31ce..efa3f65ff 100644
--- a/plugins/OStatus/lib/linkheader.php
+++ b/plugins/OStatus/lib/linkheader.php
@@ -1,4 +1,7 @@
 <?php
+/**
+ * @todo Add file header and documentation.
+ */
 
 class LinkHeader
 {
diff --git a/plugins/OStatus/lib/magicenvelope.php b/plugins/OStatus/lib/magicenvelope.php
index bbd4ce17a..03e6f7c66 100644
--- a/plugins/OStatus/lib/magicenvelope.php
+++ b/plugins/OStatus/lib/magicenvelope.php
@@ -76,7 +76,8 @@ class MagicEnvelope
                 }
             }
         }
-        throw new Exception('Unable to locate signer public key.');
+        // TRANS: Exception.
+        throw new Exception(_m('Unable to locate signer public key.'));
     }
 
 
@@ -92,7 +93,6 @@ class MagicEnvelope
             'sig' => $signature_alg->sign($armored_text),
             'alg' => $signature_alg->getName()
         );
-
     }
 
     public function toXML($env) {
@@ -110,7 +110,6 @@ class MagicEnvelope
         return $string;
     }
 
-
     public function unfold($env)
     {
         $dom = new DOMDocument();
@@ -218,5 +217,4 @@ class MagicEnvelope
             'sig' => preg_replace('/\s/', '', $sig_element->nodeValue),
         );
     }
-
 }
diff --git a/plugins/OStatus/lib/ostatusqueuehandler.php b/plugins/OStatus/lib/ostatusqueuehandler.php
index 9814cab9f..5e0ab46a5 100644
--- a/plugins/OStatus/lib/ostatusqueuehandler.php
+++ b/plugins/OStatus/lib/ostatusqueuehandler.php
@@ -221,5 +221,4 @@ class OStatusQueueHandler extends QueueHandler
 
         return $feed;
     }
-
 }
diff --git a/plugins/OStatus/lib/pushinqueuehandler.php b/plugins/OStatus/lib/pushinqueuehandler.php
index 1fd29ae30..965d04266 100644
--- a/plugins/OStatus/lib/pushinqueuehandler.php
+++ b/plugins/OStatus/lib/pushinqueuehandler.php
@@ -22,7 +22,6 @@
  * @package FeedSub
  * @author Brion Vibber <brion@status.net>
  */
-
 class PushInQueueHandler extends QueueHandler
 {
     function transport()
diff --git a/plugins/OStatus/lib/salmon.php b/plugins/OStatus/lib/salmon.php
index 631ebc7d8..963da6508 100644
--- a/plugins/OStatus/lib/salmon.php
+++ b/plugins/OStatus/lib/salmon.php
@@ -89,8 +89,8 @@ class Salmon
                 $magickey->generate($user->id);
             }
         } else {
-            // @todo i18n FIXME: added i18n and use sprintf when using parameters.
-            throw new Exception("Salmon invalid actor for signing.");
+            // TRANS: Exception.
+            throw new Exception(_m('Salmon invalid actor for signing.'));
         }
 
         try {
@@ -101,7 +101,6 @@ class Salmon
         return $magic_env->toXML($env);
     }
 
-
     public function verifyMagicEnv($text)
     {
         $magic_env = new MagicEnvelope();
diff --git a/plugins/OStatus/lib/salmonaction.php b/plugins/OStatus/lib/salmonaction.php
index f97c67edd..41bdb4892 100644
--- a/plugins/OStatus/lib/salmonaction.php
+++ b/plugins/OStatus/lib/salmonaction.php
@@ -38,11 +38,12 @@ class SalmonAction extends Action
         parent::prepare($args);
 
         if ($_SERVER['REQUEST_METHOD'] != 'POST') {
-            // TRANS: POST is a HTTP command. It should not be translated.
+            // TRANS: Client error. POST is a HTTP command. It should not be translated.
             $this->clientError(_m('This method requires a POST.'));
         }
 
         if (empty($_SERVER['CONTENT_TYPE']) || $_SERVER['CONTENT_TYPE'] != 'application/magic-envelope+xml') {
+            // TRANS: Client error. Do not translate "application/magic-envelope+xml"
             $this->clientError(_m('Salmon requires "application/magic-envelope+xml".'));
         }
 
@@ -52,6 +53,7 @@ class SalmonAction extends Action
         $salmon = new Salmon;
         if (!$salmon->verifyMagicEnv($xml)) {
             common_log(LOG_DEBUG, "Salmon signature verification failed.");
+            // TRANS: Client error.
             $this->clientError(_m('Salmon signature verification failed.'));
         } else {
             $magic_env = new MagicEnvelope();
@@ -63,6 +65,7 @@ class SalmonAction extends Action
         if ($dom->documentElement->namespaceURI != Activity::ATOM ||
             $dom->documentElement->localName != 'entry') {
             common_log(LOG_DEBUG, "Got invalid Salmon post: $xml");
+            // TRANS: Client error.
             $this->clientError(_m('Salmon post must be an Atom entry.'));
         }
 
@@ -111,6 +114,7 @@ class SalmonAction extends Action
                 $this->handleUpdateProfile();
                 break;
             default:
+                // TRANS: Client exception.
                 throw new ClientException(_m("Unrecognized activity type."));
             }
             Event::handle('EndHandleSalmon', array($this->activity));
@@ -119,41 +123,49 @@ class SalmonAction extends Action
 
     function handlePost()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand posts."));
     }
 
     function handleFollow()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand follows."));
     }
 
     function handleUnfollow()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand unfollows."));
     }
 
     function handleFavorite()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand favorites."));
     }
 
     function handleUnfavorite()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand unfavorites."));
     }
 
     function handleShare()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand share events."));
     }
 
     function handleJoin()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand joins."));
     }
 
     function handleLeave()
     {
+        // TRANS: Client exception.
         throw new ClientException(_m("This target doesn't understand leave events."));
     }
 
@@ -181,7 +193,8 @@ class SalmonAction extends Action
         if (empty($actor->id)) {
             common_log(LOG_ERR, "broken actor: " . var_export($actor, true));
             common_log(LOG_ERR, "activity with no actor: " . var_export($this->activity, true));
-            throw new Exception("Received a salmon slap from unidentified actor.");
+            // TRANS: Exception.
+            throw new Exception(_m('Received a salmon slap from unidentified actor.'));
         }
 
         return Ostatus_profile::ensureActivityObjectProfile($actor);
diff --git a/plugins/OStatus/lib/xrd.php b/plugins/OStatus/lib/xrd.php
index 145cd64cb..c8cffed9c 100644
--- a/plugins/OStatus/lib/xrd.php
+++ b/plugins/OStatus/lib/xrd.php
@@ -27,7 +27,6 @@
  * @link      http://status.net/
  */
 
-
 class XRD
 {
     const XML_NS = 'http://www.w3.org/2000/xmlns/';
@@ -61,11 +60,13 @@ class XRD
         error_reporting($old);
 
         if (!$ok) {
-            throw new Exception("Invalid XML.");
+            // TRANS: Exception.
+            throw new Exception(_m('Invalid XML.'));
         }
         $xrd_element = $dom->getElementsByTagName('XRD')->item(0);
         if (!$xrd_element) {
-            throw new Exception("Invalid XML, missing XRD root.");
+            // TRANS: Exception.
+            throw new Exception(_m('Invalid XML, missing XRD root.'));
         }
 
         // Check for host-meta host
diff --git a/plugins/OStatus/lib/xrdaction.php b/plugins/OStatus/lib/xrdaction.php
index 91bb87cc2..c8b5beff3 100644
--- a/plugins/OStatus/lib/xrdaction.php
+++ b/plugins/OStatus/lib/xrdaction.php
@@ -103,5 +103,4 @@ class XrdAction extends Action
         header('Content-type: application/xrd+xml');
         print $xrd->toXML();
     }
-
 }