Post message referencing users
12845
How to let users tag their friends in a Facebook status update posted from a tab on a Facebook page?
42712
Is there a shortcode for linking to a user profile in an answer?
45138
How to get users (entities) for a certain field value?
29186
How do I contact other users?
157628
Autocomplete username references in answer posts
91504
Ask a question and notify users on specific users list
49291
Who gets the "Was this post useful to you?" feedback?
127692
One comment per user per post but be able to reply to existing comments
140211
Move post to different user
118077
Provide indicator that another user is editing a post
131213
Editing a previous message posts a new one instead
44810
Keep the message ID in the text field so I can reply to a message with an upload
55873
Significance of the users like 'user'
79007
Improve "Protected Question" message with regard to rep gained through Association Bonus
157076
Obtaining text of spam/offensive posts
17654
Referencing the reference?
130885
Information of the user in comments