Well crap. MT-Blacklist is not allowing anyone to post, because it pukes on every comment. I wonder if one of the regex's got added malformed or something. I'll poke at it later. In the mean time, if want to comment on something, you can always email starjewelATgmailDOTcom.

Update: That's exactly what it is. It was a bad URL that prevented all comments. The conspiracy theorist in me wonders if the spammers are trying to break MT-Blacklist. Regardless, commenting should work again.