People always think they are unique in their behaviour, but most behaviour is predictable when you gather information and behaviour patterns from millions of people around the world.

That's also why it's always a bogus argument when people are telling : I have nothing to hide. This information is useless.

To you it might seem useless but to others it can be of great value and especially when combined with other information. It's also what feeds most of the Social Engineering.

Great article!