Fixing bug I've been tracking down for a while. Following an activity on a user you don't follow now correctly shows a tryfeed. Thanks to @afita for the great find!

apps/social/migrations/0005_sharedstory_activity_userid.py

@@ -0,0 +1,26 @@
+# -*- coding: utf-8 -*-
+import datetime
+from south.db import db
+from south.v2 import DataMigration
+from django.db import models
+
+from apps.social.models import MActivity
+
+class Migration(DataMigration):
+
+    def forwards(self, orm):
+        activities = MActivity.objects.filter(category='sharedstory', with_user_id__ne=True)
+        print "Found %s activities missing sharedstory with_user." % activities.count()
+        for activity in activities:
+            activity.with_user_id = activity.user_id
+            activity.save()
+        
+    def backwards(self, orm):
+        "Write your backwards methods here."
+
+    models = {
+        
+    }
+
+    complete_apps = ['social']
+    symmetrical = True

apps/social/models.py

@@ -2266,6 +2266,7 @@ class MActivity(mongo.Document):
     @classmethod
     def new_shared_story(cls, user_id, source_user_id, story_title, comments, story_feed_id, story_id, share_date=None):
         a, _ = cls.objects.get_or_create(user_id=user_id,
+                                         with_user_id=user_id,
                                          category='sharedstory',
                                          feed_id="social:%s" % user_id,
                                          story_feed_id=story_feed_id,

media/js/newsblur/reader/reader_social_profile.js

@@ -215,15 +215,7 @@ _.extend(NEWSBLUR.ReaderSocialProfile.prototype, {
             $t.tipsy('hide').tipsy('disable');
             self.fetch_profile(user_id);
         });
-        
-        $.targetIs(e, { tagSelector: '.NB-interaction-username, .NB-interaction-follow .NB-interaction-photo' }, function($t, $p){
-            e.preventDefault();
-            e.stopPropagation();    
-            var user_id = $t.data('userId');
-            var username = $t.closest('.NB-interaction').find('.NB-interaction-username').text();
-            self.model.add_user_profiles([{user_id: user_id, username: username}]);
-            self.fetch_profile(user_id);
-        }); 
+
     }
     
 });