With the rise of twitter, it has become now fairly commonplace to use the @Username format to reply to someone. I was wondering if there would be a way to have the system detect that use to 1) create a hyperlink to the mentioned person's profile page and 2) to create a notification (à la twitter) to the mentioned person (possibly on a dedicated page instead of via email).


1 Answer 1


Indeed, this already works. See:




The notation you're looking for is specific to comments, but broadly speaking, notifications will occur for

  1. new answers to your questions
  2. comments on your posts
  3. comments which reply using @username notation to an earlier comment you left
  • $\begingroup$ Ah, neat I missed that. Thanks! $\endgroup$ Mar 31, 2011 at 17:06
  • $\begingroup$ What happens if for example me and Jonas Meyer comment in a post and someone does @Jonas? $\endgroup$
    – JT_NL
    Mar 31, 2011 at 20:05
  • $\begingroup$ @jonast they would have to enter it as @jonast not @jonas $\endgroup$ Mar 31, 2011 at 21:54
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    $\begingroup$ Why aren't notifications to multiple users within the same comment supported? This is a (nonexistent) "feature" that people use all the time on math.SE. (It would be handy if it and useful if it actually worked.) $\endgroup$
    – cardinal
    Apr 1, 2011 at 3:06
  • $\begingroup$ Sometimes @usernames hyperlinks (it goes blue), sometimes it does not. When it does not, does it mean that the reply, did not work, will the person be notified that he or she was mentioned? $\endgroup$
    – Arthur
    Dec 4, 2016 at 0:31

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