That's because certain people hit abuse over and over again.
Please do not post to me in the future and I promise I won't post to you.
That abuse issue happened because people were being attacked. Again and again. Good luck with your private debate, I will happily avoid you in the future. I will be on Rudy threads telling people the truth about him though. I hope that doesn't lead to any attacks.
I seem to recall that SPAM and trolling threads trying to incite flame wars are also not permitted. Maybe, I'm mistaken.