If you were throwing a party, paying for the chips, dips, and beer and one guy was being a jerk, insulting some of your friends, and pissing on your floor, what would you do?
Most hosts would ask him to leave. Maybe some people at the party think he's funny and a great guy to have around. They can leave with him and throw their own party. Folks, it's a simple deal. Pull out your credit card like Jas did, buy some software and a hosting deal, and you can make up whatever rules you like. As a cuople people have said, it's just an internet board.
I have disagreed with some of the suspensions and bannings, I felt some were deserved that were not handed out. But bottom line, I defend the guys who are spending their money to keep this site going to make whatever the hell rules they want. This isn't free to run, it's free to you. Telling the host he's wrong isn't the way a guest should behave.