My suggestion:
1.let users rate the answers.
2.ask fedora and fedoraforum, I think we should "move" some people to
here.This may avoid many useless answers.
3.AnswersZapper? How about founding a team focusing on answers and rate
them?
--
*Yours sincerely,*
*Christopher Meng*
Ambassador/Contributor of Fedora Project and many others.
http://cicku.me