http://www.deletedbrain.com/ was getting hit by a spam bot... all of the "comments" were for under*ge and CP sites... that pissed me off. It was a good thing that I had my settings so that I have to review each comment, but after the 100th spam CP comment, I included my settings so that anybody who wants to comment needs to register. If they are fucktards, their IP is recorded. It won't help if someone registers a shitload of accounts, but I will still have to review the comments, and delete any accounts that piss me off.