Killing referrer spam
Don’t want spammers in your referrer logs? Killing referrer spam at Caveat Lector explains how to stop them from attacking your site.
I’m taking a close look at this and other techniques, since lately there has been a marked increase in the number of spam attacks.
A note to any spammers that come across this post: it’s pointless for you to attack this site. My referrer logs are password protected, so they will not be picked up by search engines. All you’re doing is ruining my logs and pissing me off. In case that’s actually what you want, fine. You’re doing a good job. But if you’re looking for cheap PageRank, please go elsewhere. Thanks.