Detecting spam just from HTTP headers Posted by Anon84 on Wednesday November 19, 2008 @01:41PM from the glinden.blogspot.com dept. http://glinden.blogspot.com/2008/11/detecting-spam-just-from-http-headers.html ( 1 comment | 3 points | on HN )
PG mentions this in his articles about Bayesian Spam filtering. Seems pretty compelling.