London 2012 Debuts in World Vastly Changed Since Bejing 2008
NBC Bay Area
Far more than time has passed between the 2008 Beijing games and London. In 2008, Facebook claimed 115 million users, compared to some 845 million now. During the Beijing Games, Twitter counted 4.4 million users, compared to 500 million now.
London takes inspiration from Barcelona for legacyBBC Sport (blog)
BMW to emphasise green identity at gamesFinancial Times
Swimming: David Davies aims for second swim at London 2012WalesOnline