Microsoft took a $6.2 billion charge for the purchase of performance of aQuantive, an online advertising service that it bought in 2007 for $6.3 billion. Since it bought aQuantive, Microsoft's online division has reported losses totaling nearly $9 billion.
Google spent $3.2 billion to acquire DoubleClick, an online ad service that used to compete against aQuantive. Google last year earned $9.7 billion on nearly $38 billion in revenue, with most of the money coming from online ads.
In 2011, Google's search and advertising tools helped provide $80 billion of economic activity for 1.8 million businesses, website publishers and non-profits across the U.S.
http://nextbigfuture.com/2012/07/google-earns-97-billion-from-online-ad…