I ventured over to the UNC a few years back when they were about to play UGA just to get a sense of how they were feeling about their team (optimistic, and it was a decent team). I dipped a few toes into their politics forum and after a month or so ended up banned. I've never been banned before. The reason given was "for the good of the board", not that I had infracted a rule.
Fine, their choice, I didn't mind. I mostly asked questions and that was not apparently received well. I got called all kinds of names, which were infractions, and I was banned.