The moderation is done through downvoting the question or leaving it unanswered. There are actual moderators but Quora is much more passively moderated. There'

The moderation is done through downvoting the question or leaving it unanswered. There are actual moderators but Quora is much more passively moderated. There's plenty of good content, it's just overloaded by crap questions since Quora pays people to ask (but not answer).