Nice article on Betfair, just one small mistake you might want to correct "The Betfair exchange is a centralised peer-to-peer network" I know what you are trying to convey here but technically that isn't correct, there is no peer-to-peer network, you are referring to the bets being between punters and not Betfair itself, although they do run a sports book as well which is kind of strange as it wasn't why Betfair was created in the first place. There are new sites such as Wagerr which promise true peer-to-peer betting and decentralisation, in effect providing the peer-to-peer aspect and removing Betfair (decentralisation) from the equation, hopefully this will be the future of betting.