The best defense to hotlinking is to replace the hotlinked image with something that makes the hotlinker look like an idiot.
Yes, obviously not an option in this case, but during the last election a farily welll known right wing blog hotlinked to a photo a colleague had of a particular politician (can't even remeber who now). He emailed them and asked them to remove it, but they just brushed him off. So he replaced the image with a goth/bondage one - came down pretty quickly after that.... :-)
So he replaced the image with a goth/bondage one - came down pretty quickly after that.... :-)
What the 'net really needs is a page that collects all of these pranks in one place. You can find them out there if you look through a lot of humor sites, but there's no "look who got screwed by hotlinking" site anywhere on teh 'net (at least not that I'm aware of). Now that would be a hoot!