Erik Enge writes:

...

I have been slowly converting my C++ library to Lisp, which I'll eventually bring here.

Excellent. Be sure to make it a library. :-)

Um er "Package" in Lispspeak

Once you've done that, perhaps I could see if there's any way to use it for common-lisp.net.

Well now you've given me incentive. The Bayesian end is pretty much complete, And writing a working filter should be pretty easy. I want to give it a HTTP frontend (via clhp) to make control easier, kind of like the way Popfile works, I could make the filter work as a daemon, which would filter every message that comes in and add an extra header indicating the "Classification" (Bayesian filter allow for more than just Spam and non-spam). Then you could use procmail to filter based on the header. I don't know how it would integrate so if you could give me some insight, I could design it to fit.