Users should be required to leave custom comments when closing a question
31985
Should a user be forced to add a comment when they vote to close?
60332
How can I ask question from specific users about the reason for closing a question?
45799
Right way to handle obsolete comments when some of them are mine?
114102
How to make HTML code inactive with comments
135342
Warn new users to edit important information into the question upon their first attempt to comment on a question of theirs
101219
Allow comments for all users; create comments review queue
69317
Question Close Updates
47581
Marking comments as 'addressed by edit' to reduce noise
74516
Users should be able to participate in deleting their own closed questions
39672
Allow voting "Vote to not close" from the question without being in a review
10812
Send authors an inbox message if their question is closed
133230
Why is deleting comments allowed?
24412
"Leave a comment" link even when you can't
57978
When is it appropriate to end a question without a question mark?
129908
Allow flagging own comments
92948
Allow Comments on Deleted Answers
146576
Askers should be able to close their own question as a duplicate