Multiple answers by the same user
102781
When should I add another answer?
118388
Survey database design: associate an answer to a user
83172
Acceptable solution for 'answer copying'?
39254
Limits for self-promotion in answers
42404
When answering, could we be informed that "the following people are already answering this question"?
78376
Flag Answer, duplicate
94817
Allow me to save an answer
3005
Giving edit reputation bonus for same user for same post multiple times
136324
What to do with all 9 answers pretty much the same
90462
Marking comment as an answer?
27040
Is posting someone's comment as an answer okay?
3281
Flag/close/share questions/answers?
56823
Change how questions marked as duplicates by the asker are represented
55508
Should I copy my answer to a duplicate question to the original question?
153800
What if two answer are correct on Stack Overflow?
131258
Dealing with bundle/omnibus/list-of-questions question that consists of rather distinct questions
108460
Review first post / late answers: show other answers as well