http://www.forbes.com/sites/ericsavitz/2011/02/08/googles-android-a-billion-dollar-ad-business-in-2012/ http://www.forbes.com/sites/ericsavitz/2011/02/08/google

http://www.forbes.com/sites/ericsavitz/2011/02/08/googles-android-a-billion-dollar-ad-business-in-2012/ http://www.forbes.com/sites/ericsavitz/2011/02/08/googles-an... $5.90 in 2010, increasing to $9.85 in 2012. Estimates from Piper Jaffray but based on things said by Eric Schmidt. Android is a volume business for Google. (By comparison each iPhone is worth $100 - $150 a year to Apple).