Allow comments on profile pages
58991
How do I enable comments for user profiles?
42712
Is there a shortcode for linking to a user profile in an answer?
54493
Allow new users to comment for X times in a day
128175
Could the favourites mechanism be extended to include comments?
138671
Allow users to leave an anonymous comment when voting
114709
Ban "What have you tried?" links in comments
16370
How could a user with 1 reputation point leave a comment?
105916
Auto-expand @username in comments to keep the username up-to-date
99181
I want to refer to Bill Gates on his blog with respect in the comments section
63010
Facebook - retrieving comment-count from fb:comments using href?
51469
Allow converting comments to answers
1888
Best way to obtain clarifying information when reputation doesn't allow comments?
128982
Site specific magic comment links
105735
Flag individual comments or flag once for many?
41334
Please make pending edit suggesters be @reply-able in comments
44557
SharePoint Online, how to disable new "Comments" feature?
125050
Give the "about" and "help" pages a more prominent location for anonymous users