Keep it civil, do not flame or bait other users. If you notice anything illegal or inappropriate being discussed, contact an administrator or moderator.
It's an on again / off again thing. Makes life difficult for the rest of us but you can't blame them for protecting their website from the mental cases.
I've attempted to forbid the POST verb to the site, however, the rules did not work. I still haven't been able to locate a working example to build off of.