I just added a blacklist to the blog here, because the majority of my bandwidth usage goes to HTTP referer spammers. The blacklist works on a keyword level, and I understand that some valid referers may be blacklisted as a result. Never fear: It wasn't my intent.
If you copied and pasted a URL to get here because you saw a "Stop wasting my bandwidth" message, and you feel it was in error, you know how to contact me.
Bugtested and fairly functional.