Is it OK to react in a comment to edits of answers or questions?
114749
Allow post editor to see @comments directed at him
30736
Is it ok to tell the OP to accept an upvoted answer?
135830
Could new users be prompted to edit instead of commenting?
7768
What should be done with questions that have been resolved as a comment instead of an answer?
18466
Is it ok to add examples to an answer?
108648
Can I "tip" someone who left a good comment on my answer?
64173
Notifications for edits by others of my own questions and answers?
108137
Is it OK to leave "What have you tried?" comments?
16630
Allow users to mark "accepted" answer on someone else's question?
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
34508
Notify us when the question has been edited after posting an answer
93356
Do Stack Exchange sites allow editing of comments and posts from other users?
37240
Flagging "look at my answer pls" comments
122243
When to answer vs when to just comment
128610
Does editing still bump a question?
16030
What to do when OP answers his/her own question in an edit?
105685
Use comments to ask for clarification or add more information, then what?