Many of the newest porn spams feature "CAPTCHA" pictures the user is supposed to use as a password. They do this so they can automate signing up for Yahoo Groups and HotMail accounts.
So what you should do is take any such email that comes in to an otherwise unknown address on your system and reply to it with a random letters password to poison the technique. http://news.zdnet.co.uk/internet/security/0,39020375,39153933,00.htm {^_-}
