Wouldn't it make sense to have more than one answer acceptable?
16806
Accept Multiple Answers or Split Bounty among Several Users
85905
Clarification for non-answers
121836
A better answer was posted long after accepting another. Should I accept the new one?
132693
Multi-Question Questions: How Best to Handle Them?
112256
Should I still post an answer if I see several answers have already been posted while writing an answer or making a fiddle?
37472
How about multiple hats?
35957
Number of ways an answers sheet can be fill with at least two consecutive answers?
90406
Is it OK to add [Solved] to the title of a question?
128444
Should there be anonymous answers (and questions)?
63467
Actually how important is accepting an answer to the Stack Exchange model?
25926
Why can't I accept two answers for the same question?
43615
Shouldn't the answer with more votes be above the accepted answer?
48639
Why prevent duplicate questions?
95144
separate reputation for questions and answers
114642
There is/are for multiple subjects
102781
When should I add another answer?
48794
Is it OK to edit a correct answer for fullness instead of answering?