Because not all threads are suitable to have a 'best answer', I think the OP (or moderators) should enable the selection of the best answer for a thread, and that should be displayed under the question in post #1.
But some people think the OP should choose the best answer and some people think the readers of the thread should.
Personally I think the readers should. I mean how would the OP know which is the best answer if they had to ask it in the first place?
But obviously opinion is divided.
I'm interested in your thoughts.