There is a nice conversation at Bruce Schneier’s blog on Helen Nissenbaum’s theory of “privacy as contextual integrity.” (Full disclosure: Prof. Nissenbaum is my doctoral advisor).
Some of the commentors struggle with a proper response to the common “If you have nothing to hide, then what are you afraid of?” question. My answer: “When you live in a free society, you don’t need to have something to hide to keep personal information from prying eyes; it should be the default.”
MichaelZimmer.org 