Why do you allow guests to answer questions, but members aren't allowed to participate in open questions by posting comments?
8000
How do comments work?
31968
Why do some people answer in comments?
99920
Do moderators not have a way to just push a post into the close queue?
110470
Why appropriate comment is not compulsory when someone down vote any question or answer?
129908
Allow flagging own comments
49038
Are questionnaires permitted on Stack Exchange sites?
124652
Can I prevent others from editing my question?
50556
Force Accepted Answers on Questions by Inactive Users
120358
Show the "add comment" link also to users who cannot add comments
111591
Not enough reputation - wanting to answer/comment
5563
Asking users to accept answer when they comment that it answers their question
48466
Why aren't locked posts viewable in the Questions list?
90954
Way for members to block specific community members from commenting/answering posts?
127692
One comment per user per post but be able to reply to existing comments
135830
Could new users be prompted to edit instead of commenting?
115812
Allow locking of answers
127922
Why not allow shorter comments?