If you ran an MB, what would you do to the idiots? I mean people who register at an MB just to break the rules and cause problems and start arguments, or people who are socially inept to the point where they cause problems whether they want to or not.

This MB would be an example of the "ban them all" sort of philosophy, but I've been to places which run under the "let them stay" rule, and it has its benefits as well as its bad side. I've yet to find a place which runs under the third rule, and I won't try to.