Image spam tricks spam filters / Computer Weekly, 15 March 2007
http://digbig.com/4rxqd
Sue Hildreth
""A picture is worth a thousand words," goes the old saying. What is true in art and journalism is proving equally apt in the more modern field of spam. As the recent surge in image-based spam shows, pictures can be a very effective way to get a message across – or at least through a victim's anti-spam filter."