New video gaming systems are coming out that track every joint of your body. It's basically going to become a normal thing for us to allow Microsoft to put a three-dimensional camera on top of your television set looking at you, which sounds like a Big Brother scenario if ever I heard one, but, still, it's what we're going to allow.
LinkedIn's got a little progress bar. It wants you to do things like sign up 10 of your friends. It does that near the end. At the beginning it's like, 'You put in your name. 20 percent progress! How about some other information?' People want to fill in that progress bar. They like to complete a task. They like to check a box.