It's been law for 10 years now and most webmasters have had their heads up their ass as far as it is concerned. If a gallery has content that is sexual as defined by 18 USC 2256, then the information should be listed -- but you only have to link to the content provider's site unless you shot it yourself. Until the changes go through, sponsor provided content does not make you a secondary producer.

jIgG, you allow people to use "pictures collected from the web"? Those are more commonly known as copyright infringement!