Marking question answered if the answer occurs in the comments section?
19115
Mark a comment as the answer to a question
137819
When a question is nested within a question: two question marks?
47581
Marking comments as 'addressed by edit' to reduce noise
130862
How do I tell exactly what time an answer was posted?
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
55293
What is desired practice for deriving answers from comments?
51338
Is there or can there be a way to highlight text in an answer?
14309
Collapse comments on old questions
18726
Receive Notifications for Comments on any Answers to Your Question
18647
Commenting out large sections
60753
HTML in answers/questions
148407
Can we have a notification when the answer to any of my question got edited?
86307
Are comments on answers to my question supposed to show up in my recent activity
59173
Is there a way to see how the markup of a per-site meta answer is formed?
146983
Where to put comments in an if-then-else construct?
143446
Punctuating a quoted question within a quoted statement
66277
How to make Stack Overflow tell you about a new question with certain tag(s) the second it is asked?