Jay Allen has issued a preliminary 2.0 release of MT-Blacklist for Movable Type 3.0x users. Jay is describing this as an "emergency" release, because it's not finished, but there are a lot of bleeding edge MT 3.0 users right now running without comment spam protection.
A full version of MT-Blacklist 2.0 will be released with MT 3.1, due out next week.
We're doing quite well with regards to c* s* around these parts. I get a couple a week, and I check my email often enough to delete them before Google notices. Given the age and high Google rank of this blog, I'd say that if other 3.0 users are suffering much more than I am, it must be because I renamed my CGI scripts and most comment spam bots are dumb. Kudos, I guess, to the one whose bot crawls the site looking for comment forms (which so far I haven't bothered to rename). Either that or those are manually posted, in which case I pity the fool.