The AVN article also mentions the movie trailers:
Other issues included how
sexually explicit movie trailers posted on membership websites could be found obscene in light of the Supreme Court's recent affirmation of the Third Circuit's striking down of the Child Online Protection Act, as well as the question of what "taken as a whole" means in the context of, for instance,
a 21-second video clip posted on a website containing hundreds of such clips, photos and text.
http://business.avn.com/articles/34645.html