Condense comments until clicked on
134399
Automatically hide old comments
9626
Formatting Keyboard Shortcuts for Comments
30156
Take most recent (or concatenate) edit comments when editing during grace period
42721
Self destructing comments
49841
Cancelling upvote on comment?
24179
Comment posting issue
146983
Where to put comments in an if-then-else construct?
120472
Add/Show comments focuses text box by default
83238
The "x more comments" phrase is cut off
15279
Implement a Selective Comment Ban
130821
Don't offer the "edit" option for comments after the 5 minute window in the android app
118444
Please ditch the five-minute window on comment editing
61657
HTML comments within comments?
128221
Promoting comments to answers
34814
Mandatory comment after downvote
47581
Marking comments as 'addressed by edit' to reduce noise
81477
Please fix jarring new page jump when posting comments