Paul Graham on Spam

Paul Graham has an extremely in-depth site regarding spam and various spam blocker software technologies.

His primary interest in spam filtering seems to be Bayesian - but he also discusses other techniques for blocking spam.

Lots of links to good resources and articles - including way filters get tricked, legal information and general spam stories.

Paul Graham is a highly prolific Blogger, writer and developer. He also shares his views on many tertiary subjects such as hackers and art. He has also created several programming languages.

Worth checking out.

Resource: Paul Graham on Spam