According to AdMob’s latest mobile metrics report, Android was the #2 smartphone platform in the US in the fourth quarter of 2009 with a 27 percent share of mobile requests, or exactly half of the 54 percent share belonging to iPhone OS devices. 

Though the iPhone continues its smartphone dominance, Android is growing at a break-neck pace. Firefox the world's most second popular browser (and that is without being force-fed via an operating system) have announced a highly efficient version as a mobile browser for the Android platform.

This further underlines our view that the Mobile Internet will outpace the "download this app to view" world even in Western markets (it already does in rest of World).