I'm on my phone so I can't really put out a long response but... > There are only about 4 hops between any 2 people on Facebook. If you take the median number of Facebook friends on one account (100) and raise it to the 3rd power, you get 1 million people every time one person is placed under surveillance.

Cool, 100^3 = 1mil. I wonder what the average number of shared friends a user has with their network. Otherwise by this reasoning there are about a million times more people on facebook than there are facebook accounts.