Well, I found this website that provides a link that you can shove into your webpage. What it does is link to that website which has thousands of....
Here, I quote:
How does it work?
This page creates randomly hundreds of fake email addresses each time it is loaded. Any time the spam-bot revisits this site it will feed the spam-bot with another 100 fake email addresses. This will clog up the spammers databases.
Already after 50 visits you dumped a 5,000 fake email addresses into the their databases.
The domain names we use are valid domain names from spammers found in your temporary email service at myTrashMail.com. This list is constantly updated by our spamfilter list.
A cool side effect by useing spam domain is that spammers spam other spammers!

It is essential that these domain names are valid and active. Spammer's would detect this fake domains immediatley.
http://www.mytrashmail.com/anti_spam.aspx There! That's awesome, I put it on my index page.
FU spammers, spam is for sandwiches!