> If you use the latest version of Mozilla the mail client includes a
> Bayesian spam filter.  I've only been using it for about a week,
> but 
> already it catches over 95% of the spam I receive, and there was
> only 
> one false positive on the day I first started using it.  For
> instance, 
> the filter marked the first message in this thread as junk, but was
> smart enough to realize that the replies were not junk.
> 
> Of course, this only helps if you subscribe to ruby-talk rather
> than 
> read the newsgroup.
> 
> http://www.paulgraham.com/antispam.html


There's a very good bayesian POP proxy on sourceforge; POPfile.  If
you're using POP for mail, it's excellent.  I'm getting 98%+ accuracy
with it after a couple months.  The beauty of it also is that it
doesn't just do "spam" and "not-spam" (though you can set it up that
way if you want).  You can have as many buckets as you choose; I
think I have about 6, 1 of which is my spam catchall.

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