212.13.99.14 referrer spammer
I found this referrer:
http://localhost/spamit/index.php
That presumably means there’s a script on that IP (212.13.99.14) that spams.
I found some referrer spam, with spam pointing to other people’s blogs and galleries with lots of spam comments on them. That spamit referrer preceded what looked like a human looking at my blog, with a different user agent than the spamming that preceded it (by less than ten minutes).