Smart Bitches Trashy Books has a great discussion on 50 Shades and libraries - including an excellent letter by SB Sarah to a Florida library that has problems with 50 Shades, but no problem with a western series called Longarm that has just as objectionable sex in it, but since it's aimed at men, there doesn't seem to be a problem with it.
http://smartbitchestrashybooks.com/b...es-from-circul