A thought provoking and kinda scary post about Spam and Anti-Spam tactics and the brilliance of SpamBayes Addin for outlook and how its tactics compare with SpamAssassin. Very good stuff.
One example of a deceptive spam message was a message that actually spidere'd Jon's Site and pasted in remarks taken from the web page into the message (such as "I was glad to see the link about 'bla bla' on your site..."). I had no idea the tactics were that clever!
Thanks to Paschal for the link.