Venge For The Bad Ones
This is a not-so-hidden page on my site that contains an anti-spambot script. When the page is loaded, it generates one hundred fake e-mail address. Why? Spambots are little programs that search a website for an e-mail address. It will find this page and record all one hundred e-mail addresses. When the spammer tries to use the addresses, they'll all bounce back and hopefully, if enough people do this, flood his system.
You can get the script
here and set up your own anti-spambot page.