About twenty years ago we probably surpassed Orwell's 1984. Until ten years ago, the secret services of the world's governments would have done just about anything to get this kind of personal data. Five years ago, Facebook & co (twenti in Spain, vkontake in Russia, etc.) started to convince people to hand that info over for free. Today people are saying that somehow improves their lives, or that they have "nothing to hide". What do you think will happen when, in a few decades in the future, your personal, detailed history ends up in the hands of a government that is rattled by debt, ever increasing poverty and unemployment, and political instability, in a world much like in the 1930s? Not that that scenario must happen, but it can, given today's outlook, and history tends to repeat itself...