bryant

Come to think of it, what I'd like to see in comment spam detection next is this algorithm: whenever three comments are submitted within an hour, and all three contain the same URL, add the full hostname in the URL to the spam filter list and notify me.

Yeah, it's open to denial of service, but it's a weak DoS in that anyone who's denied service can get around it easily by not posting URLs with that hostname. And there are significantly more spammers than there are people carrying out DoS attacks on my comments.