Torn pointed out this fucktard monkey to me a little while ago:
http://tbig10k.com/?category=free&page=1
They are hotlinking the shit out of a lot of domains - it looks like they have a spider that goes to link lists & TGP's, finds galleries & then hotlinks the images as if they were their own. They do give put up a text link that says "SUPPORT THE ORIGINAL GALLERY" for each of the thousands of galleries they have hotlinked, but IMHO that's not gonna cut it.
So, poke around & check your htaccess files - I saw a few sponsors & familiar domains on there that I use that are being hotlinked
