Ability to accept multiple answers
38540
Wouldn't it make sense to have more than one answer acceptable?
140521
Flagging accepted "answers"
25593
Encourage users to select 'Accepted Answer' for old Questions
50556
Force Accepted Answers on Questions by Inactive Users
39551
Allow to submit an answer with ctrl+enter
137952
Allow changing votes on answers if the question is edited
106961
Include sorting of accepted answer on profile
24666
Accepted an answer message
115812
Allow locking of answers
89795
Which answer should I accept?
22936
Is it ok to choose a different answer for a bounty award than the one I accept?
35919
Is accepting an answer discouraging more answers?
32852
What answer to accept?
116860
Is it poor form to switch accepted answers?
54657
Should I accept wrong answers to boost my accept rate?
11336
How should we deal with duplicate answers?
148502
Two accepted answers