diff --git a/plugins/ExtendedProfile/lib/extendedprofilewidget.php b/plugins/ExtendedProfile/lib/extendedprofilewidget.php
index 03be420bea..f04dccd0ae 100644
--- a/plugins/ExtendedProfile/lib/extendedprofilewidget.php
+++ b/plugins/ExtendedProfile/lib/extendedprofilewidget.php
@@ -328,7 +328,7 @@ class ExtendedProfileWidget extends Form
         if (!empty($field['company'])) {
             $this->out->element('div', 'field', $field['company']);
 
-            // TRANS: Field label in experience area of extended profile (when did one start a position).
+            // TRANS: Field label in extended profile (when did one start a position or education).
             $this->out->element('div', 'label', _m('Start'));
             $this->out->element(
                 'div',
@@ -336,7 +336,7 @@ class ExtendedProfileWidget extends Form
                 date('j M Y', strtotime($field['start'])
                 )
             );
-            // TRANS: Field label in experience area of extended profile (when did one end a position).
+            // TRANS: Field label in extended profile (when did one end a position or education).
             $this->out->element('div', 'label', _m('End'));
             $this->out->element(
                 'div',
@@ -376,7 +376,7 @@ class ExtendedProfileWidget extends Form
             isset($field['company']) ? $field['company'] : null
         );
 
-        // TRANS: Field label in experience edit area of extended profile (when did one start at a company).
+        // TRANS: Field label in extended profile (when did one start a position or education).
         $this->out->element('div', 'label', _m('Start'));
         $this->out->input(
             $id . '-start',
@@ -384,7 +384,7 @@ class ExtendedProfileWidget extends Form
             isset($field['start']) ? date('j M Y', strtotime($field['start'])) : null
         );
 
-        // TRANS: Field label in experience edit area of extended profile (when did one terminate at a company).
+            // TRANS: Field label in extended profile (when did one end a position or education).
         $this->out->element('div', 'label', _m('End'));
 
         $this->out->input(
@@ -416,13 +416,13 @@ class ExtendedProfileWidget extends Form
         $this->out->element('div', 'label', _m('Institution'));
         if (!empty($field['school'])) {
             $this->out->element('div', 'field', $field['school']);
-            // TRANS: Field label in education area of extended profile.
+            // TRANS: Field label in extended profile for specifying an academic degree.
             $this->out->element('div', 'label', _m('Degree'));
             $this->out->element('div', 'field', $field['degree']);
             // TRANS: Field label in education area of extended profile.
             $this->out->element('div', 'label', _m('Description'));
             $this->out->element('div', 'field', $field['description']);
-            // TRANS: Field label in education area of extended profile (when did one start an education).
+            // TRANS: Field label in extended profile (when did one start a position or education).
             $this->out->element('div', 'label', _m('Start'));
             $this->out->element(
                 'div',
@@ -430,7 +430,7 @@ class ExtendedProfileWidget extends Form
                 date('j M Y', strtotime($field['start'])
                 )
             );
-            // TRANS: Field label in education area of extended profile (when did one end a education).
+            // TRANS: Field label in extended profile (when did one end a position or education).
             $this->out->element('div', 'label', _m('End'));
             $this->out->element(
                 'div',
@@ -460,7 +460,7 @@ class ExtendedProfileWidget extends Form
             isset($field['school']) ? $field['school'] : null
         );
 
-        // TRANS: Field label in education edit area of extended profile.
+        // TRANS: Field label in extended profile for specifying an academic degree.
         $this->out->element('div', 'label', _m('Degree'));
         $this->out->input(
             $id . '-degree',
@@ -477,7 +477,7 @@ class ExtendedProfileWidget extends Form
             isset($field['description']) ? $field['description'] : null
         );
 
-        // TRANS: Field label in education edit area of extended profile (when did one start an education).
+        // TRANS: Field label in extended profile (when did one start a position or education).
         $this->out->element('div', 'label', _m('Start'));
         $this->out->input(
             $id . '-start',
@@ -486,7 +486,7 @@ class ExtendedProfileWidget extends Form
             isset($field['start']) ? date('j M Y', strtotime($field['start'])) : null
         );
 
-        // TRANS: Field label in education edit area of extended profile (when did one end an education).
+        // TRANS: Field label in extended profile (when did one end a position or education).
         $this->out->element('div', 'label', _m('End'));
         $this->out->input(
             $id . '-end',
diff --git a/plugins/OStatus/OStatusPlugin.php b/plugins/OStatus/OStatusPlugin.php
index af343362fb..1a02cdc8d3 100644
--- a/plugins/OStatus/OStatusPlugin.php
+++ b/plugins/OStatus/OStatusPlugin.php
@@ -327,7 +327,8 @@ class OStatusPlugin extends Plugin
                 return false;
 
             } catch (Exception $e) {
-                // TRANS: Error message in OStatus plugin.
+                // TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
+                // TRANS: and example.net, as these are official standard domain names for use in examples.
                 $err = _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.");
             }
 
@@ -360,7 +361,8 @@ class OStatusPlugin extends Plugin
                     return $this->filter(array($oprofile->localProfile()));
 
                 } catch (Exception $e) {
-                    // TRANS: Error message in OStatus plugin.
+                // TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
+                // TRANS: and example.net, as these are official standard domain names for use in examples.
                     $this->msg = _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.");
                     return array();
                 }
diff --git a/plugins/OStatus/actions/ostatusgroup.php b/plugins/OStatus/actions/ostatusgroup.php
index f2170c0346..e2c4121c3f 100644
--- a/plugins/OStatus/actions/ostatusgroup.php
+++ b/plugins/OStatus/actions/ostatusgroup.php
@@ -77,7 +77,8 @@ class OStatusGroupAction extends OStatusSubAction
                      // TRANS: Field label.
                      _m('Join group'),
                      $this->profile_uri,
-                     // TRANS: Tooltip for field label "Join group".
+                     // TRANS: Tooltip for field label "Join group". Do not translate the "example.net"
+                     // TRANS: domain name in the URL, as it is an official standard domain name for examples.
                      _m("OStatus group's address, like http://example.net/group/nickname."));
         $this->elementEnd('li');
         $this->elementEnd('ul');
diff --git a/plugins/OStatus/actions/ostatussub.php b/plugins/OStatus/actions/ostatussub.php
index c592e8b380..00f9c81faa 100644
--- a/plugins/OStatus/actions/ostatussub.php
+++ b/plugins/OStatus/actions/ostatussub.php
@@ -228,14 +228,16 @@ class OStatusSubAction extends Action
             } else if (Validate::uri($this->profile_uri)) {
                 $this->oprofile = Ostatus_profile::ensureProfileURL($this->profile_uri);
             } else {
-                // TRANS: Error text.
+                // TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
+                // TRANS: and example.net, as these are official standard domain names for use in examples.
                 $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.
+                // TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
+                // TRANS: and example.net, as these are official standard domain names for use in examples.
             $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) {
@@ -260,7 +262,8 @@ class OStatusSubAction extends Action
             common_debug('Not a recognized feed type.', __FILE__);
         } catch (Exception $e) {
             // Any new ones we forgot about
-            // TRANS: Error text.
+                // TRANS: Error message in OStatus plugin. Do not translate the domain names example.com
+                // TRANS: and example.net, as these are official standard domain names for use in examples.
             $this->error = _m("Sorry, we could not reach that address. Please make sure that the OStatus address is like nickname@example.com or http://example.net/nickname.");
             common_debug(sprintf('Bad feed URL: %s %s', get_class($e), $e->getMessage()), __FILE__);
         }
diff --git a/plugins/OStatus/actions/ostatustag.php b/plugins/OStatus/actions/ostatustag.php
index 95f56bbfc4..1df74d9079 100644
--- a/plugins/OStatus/actions/ostatustag.php
+++ b/plugins/OStatus/actions/ostatustag.php
@@ -74,7 +74,7 @@ class OStatusTagAction extends OStatusInitAction
         // TRANS: Field label.
         $this->input('profile', _m('Profile Account'), $this->profile,
                      // TRANS: Field title.
-                     _m('Your account id (i.e. user@identi.ca).'));
+                     _m('Your account id (for example user@identi.ca).'));
         $this->elementEnd('li');
         $this->elementEnd('ul');
         $this->submit('submit', $submit);