I guess it depends on your domain, language, type of question, etc .. but in my experience you get a good amount of correct answers in SO, buy clearly YMMV. I

I guess it depends on your domain, language, type of question, etc .. but in my experience you get a good amount of correct answers in SO, buy clearly YMMV. I do find answers that are marked as correct that are no longer the best answer, what i find less of is obviously wrong answers marked as correct