Imo, the gallery itself should have 2257 links on the bottom of the page. If legistation ever requires 2257 to be shown for every image, then the image search engines will have to display this information as well.

After a quick browse through my fake TGP, some of the biggest sponsors don't show 2257 on their FHGs. Randy Blue, Click Here Cash, Curious Cash, Big Cash Society and Pride Bucks don't even have 2257 on their own galleries. What's up with that?!