I deleted about 250 comment spams from log.antiflux.org today. I also added terms like "blackjack", "casino", and "roulette" to the blacklist. The system blocks comments that contain any of those patterns. While it's possible that it could block some legitimate comments, real people will just see an error message and can try posting again without the URL.
Anyone with a log account can add to the blacklist and prune spam from their log using mt-blacklist.cgi. MT-Blacklist is no longer supported, but we haven't bothered upgrading to a newer version of MovableType that includes better anti-spam features. If we're going to upgrade, it would be nice to find something that supports LDAP properly.
We also automatically turn off comments for old posts as a way to reduce comment spam. That seems to help a lot.
Incidentally, if you have a log account and want to show a list of recent comments, check the wiki page.
Posted by tim at May 24, 2006 08:55 PM