There is a subtle difference between „a public“ and „the public“. A public is all of the people on the net that I know and want to share info with, the public is everybody else. Marc Zuckerberg from facebook simply does not get that difference. Wired magazine recently published Facebook’s Gone Rogue. I agree. Facebook zucks.
In a social network I want to be able to choose what and with whom I share infos, Facebook wants to share everything I own with everybody and they want to help me doing that. No thanks. Facebook account deleted.