Some stats from Mary Meeker's 2012 Internet trends report: 1) China now has 538M Internet users (+10% Y/Y), though penetration is still only at 40%. It also has 270M smartphone subs; penetration (as a % of mobile subs) stands at 24%. 2) Globally, there are 1B smartphone subs, compared with 5B mobile subs. 3) Mobile data now makes up 13% of total Internet traffic. 3) Total mobile app/ad revenue is expected to hit $19B in 2013, up from $15B in 2012. 4) About 1.5B Wi-Fi devices and 2B Bluetooth devices will ship in 2012.