I guess that's the other side of being mainstream - people, who are not perfect users, are using your product too. Those not perfect users are not only the one

I guess that's the other side of being mainstream - people, who are not perfect users, are using your product too. Those not perfect users are not only the ones who post questions but also the ones who answer them just for the points. So closing questions which are just copy pasted error messages is solving only half of the problem. But the other problem is much more subtle. You can't ban (or whatever) someone, who answers questions... Or can you?