In other spam-filtering related news, I got this note from Daniel Quinlan saying that spamassassin is having a logo contest.
The SpamAssassin project is holding a logo contest to replace our old venerable logo with a new one for our upcoming 3.0 release which has both major improvements and will be our first release as an official ASF top-level project. Fame and fortune await the winner. Well, okay, maybe not, but we'll give you credit and like you very much. See http://wiki.apache.org/spamassassin/LogoContest for more information and to make an entry.This is also mentioned on taint.org.
Sounds like fun. Bring out The GIMP and get to it!