1. Notify Abuse services; I had this dweeb banned from one ISP and am waiting for the other.
2. As someone said: banning "Pepotamo*" is a good temporary
3. I'm considering some kind of (visual?) confirmation for guest post.
Any known hacks out there?
4. Flooding e-mail account won't help.
But, since this seems to be always for the same site, maybe that site sould be the target?