There was an article on today's Slashdot about a Bayesian-based spam filter written as a simple Perl script. Looks quite effective and easy to implement. Has anyone tried this? Filter: http://popfile.sourceforge.net/ Original Idea: http://www.paulgraham.com/spam.html /. article: http://slashdot.org/articles/02/11/03/155255.shtml?tid=111