Hmmm... new spam idea coming down the pipe. Looks like 'Paul Graham' set off a firestorm of coding with his article A Plan for Spam.
A few alpha version proof of concept programs of note (standalone):
Spam Recognition System
Also, there's one that is a plugin for SquirrelMail:
BayesSpam - Intelligent Spam Filter
Can't wait to implement on my own server! This should make spam fighting so much easier.
Oh, and got gentoo working on my Mac. Heheheh. Now I can rule the world (again). And wait until the next millenium for Gnome to compile. Yawn.
Not to start a holy war... but OSX is slow, linux is fast. ;]