I remember there being a lot of talk about a website's responsibility for 2257 on users who upload their own photos.

What I don't remember is the outcome in opinion or stated facts.

Is the website liable for user uploaded nudes? (And I'm sure there is a comment about well if they are under 18 then yes - but it's assumed, the "theme" is an adult driven niche and all members are over 18)

Examples to site type:

JockBod, xxxtube, any adult social networking website.

I know, at one point, it was said, a forum owner is not in need of the 2257 information for images the users post.

So

Is the same for a social networking site? As long as the profiles and scrubbed for obscenity? Just nude but no sex? Nude but no erection? Only Verified profiles?

What if it's behind a Paid membership and not on a free access board/site/network? Is the site owner now liable to all content because of the age check through membership fee?