The "sought" ruleset
Our spamtrap network collects multiple hundreds of megabytes of spam per day. Wouldn't it be great if there was a way to feed that directly into a script to automatically extract rules?
This is now possible, and the results are the "sought.cf" ruleset -- an automatically-generated ruleset which seeks good rules directly from the SpamAssassin spamtraps, updated every 4 hours.
Update: this is no longer active, and should not be used.