Authoritative link to provide users in comments for minor edits
49046
Too Minor rejection reason needs either to be reworded or removed
23614
A method for the OP to accept comments?
55656
Repository of useful pro-forma comments
135342
Warn new users to edit important information into the question upon their first attempt to comment on a question of theirs
99031
Keyboard shortcut to autocomplete the user in comments
96239
What is the syntax for providing a hyperlink (with a link description) in comments
26650
Text formatting now allowed in comments (List of proven and disproven abilities)
70088
Give me a blank Comment box when I am Improving a Suggested Edit
20441
Is there a way to edit or delete and reenter comments once they're posted?
128221
Promoting comments to answers
43384
Legitimate edits of less than 6 characters
47685
How do I view, but not edit, the markup for any given comment on any given Stack Exchange site?
66719
Can we allow moderators to upgrade a comment to an answer?
134870
Different implementation of downvoting: require comments
119103
Allow downvoting comments
70079
Notify users about edit suggestion on their own posts
52100
Allow new users to flag comments on their own posts