Can we make it possible to tag more than one user in the same comment?
44835
Allow more than one @name notification per comment
48768
Is there some markup to post tags?
20118
Is there any way to favorite/bookmark an answer?
45300
How to prevent duplicate usernames when people register?
23644
A "friends list" on Stack Overflow would be nice
108648
Can I "tip" someone who left a good comment on my answer?
68981
Improve the usability/intuitiveness of direct comment links
82959
Can we have threaded comments?
72668
Dealing with "difficult" usernames in targeted comments
134930
Please make the multiple comment timer less annoying (non-resetting etc.)
35575
Automatic tag suggestions
14244
Finding specific users by their location and a tag score
7494
Comment on posts that you have an open bounty on, despite reputation
105916
Auto-expand @username in comments to keep the username up-to-date
15279
Implement a Selective Comment Ban
53582
More than one person should be able to offer a bounty for the same question at the same time
83306
List of Comments on User Tab