Method to reduce added information in a question being written in comments
70385
Prevent the OP commenting on their own post?
154556
Comment editing grace period
127922
Why not allow shorter comments?
34339
Lower the amount of reputation needed to comment
85844
Can the longer comment bug be fixed?
83927
Are comments safely hidden once the document is compiled?
144201
Can I place  in a comment?
152270
Answering comment-answered questions
26650
Text formatting now allowed in comments (List of proven and disproven abilities)
146983
Where to put comments in an if-then-else construct?
44513
disable comments if array exists
130885
Information of the user in comments
59454
Use of the comment package
32317
Code Formating in Comments
10373
Can we get rid of the threshold of 15 chars for comments?
20867
what is the purpose of the extra asterisks in php comments?
1888
Best way to obtain clarifying information when reputation doesn't allow comments?