Spamassassin Rules of the Day

Lately I've been seeing Spamassassin's accuracy go down and down and down. A message on the gentoo-user list pointed me to the Spamassassin Wiki and in particular the Rules Du Jour page. Basically new rules to help deal with the constantly changing battlefield of fighting spammers that you can download whenever suits you (or via a handy cron entry) and in theory SA's accuracy will go up.