When should one edit someone else's answer vs. Adding your own?
48794
Is it OK to edit a correct answer for fullness instead of answering?
99140
How can we be better at approving suggested edits that improve answers?
76545
changing your answer to match someone else's
84428
Editing the question such that it answers itself
102052
Detect edits to add [SOLVED] or [RESOLVED] to the title and direct the user to add an answer
9251
Do you delete your own answer when it's a duplicate?
28528
Where should I post my sum-up of the answers, as the OP?
6697
Deciding what answer to accept: the correct one-liner or the later elaborate one with code?
5021
When to comment or answer
14980
How do I mention my own products in answers?
145804
Is editing sources.list a good idea?
16630
Allow users to mark "accepted" answer on someone else's question?
149389
Edit of own post comes in review queue
36608
How can I cancel an edit I made on another user's question or answer?
61562
If you are not satisfied with answers on someone else's question, should you ask your own?
117287
How should a SO answer be credited when used in an open-source project?
69625
Does it look good to edit the question you're answering?