I disagree with @SuePGardner: "I think that most people, most of the time, have decided to just assume everything we do online is public, and to conduct ourselves accordingly." I wish people did, but instead most people believe the "privacy" settings of Facebook really do protect their NSFW pictures, otherwise we wouldn't have things like The #Fappening http://suegardner.org/2014/10/22/why-im-in-favour-of-online-anonymity/ !privacy