I’ve seen my blog stats polluted by this:

I think it had to do with a post I had made about these parents who thought it was a good idea to let their kids watch them having sex. I pulled the post because it was attracting serious negative comments. But apparently the link got shared around. So now my stats/logs include the above.
The fact that it’s all from Palo Alto, CA indicates to me it’s probably coming from Alta Vista – remember that?