Simon,
I don't like the idea of voting people off. I think it will hurt many people's feelings more than a personal attack. An example, let's say Yadirf posted that I should be voted off, and some agree with him, how would I react to that? My guess would be not very well. I think people should email you about their problem with somebody. You can send an email to the offender, and go from there. We all trust your judgement, and besides, it is your board. As a guest to your board, I don't think a group should tell you what to do with it and who should be allowed to post and who should not. That decision rests solely with you. But then again, what do I know.
"Hand me that whiskey, I need to consult the spirit."-J.F. Rutherford