tgp, thumbnails legality ?

[araxis]

Does anyone have or can point me to information on whether or not hosting thumbnails of pornographic material is legal if you don't have the 2257 etc documents.

I don't have a gallery. I'd just like some information before I start something like that.

Looking at GOOGLE's image search. They have cached such images and of course do not have those documents for the images that they have thumbnailed. It would seem that they too would be in violation of the law if there was a need for 2257 documents for the images.

Thank you for your reply in advance.