Tim Wu in the Wall Street Journal today writes about Metcalfe’s “Law” (or what he calls “our convenience”) as what guarantees that the more things change in the information economy, the more the stay the same (new big monopolies for each new development). Facebook showed today what kind of convenience you can provide when you have more than 500 million loyal followers. At this stage of their game, they have very good chance to become the biggest information monopoly of all times.