I suggest that there could be a post rating system to be in place, sort of like thottbots. And if the post gets a really low rating it gets deleted automatically. (Post, not thread) and also do something like if the post/thread gets 100 pluses, the user gets 1 rep, 500 pluses another rep, 1000 another. I think it'd make telling people they fail much easier without flaming them.
-The Dude