"$24.2 billion pie for all of US internet advertising" Apparently Google made almost half of that money. Google's 2009 revenues were $23.7 billion. 47% of th

"$24.2 billion pie for all of US internet advertising" Apparently Google made almost half of that money. Google's 2009 revenues were $23.7 billion. 47% of their revenues came from the US, and they say "Advertising revenues made up 99% of our revenues in 2007 and 97% of our revenues in 2008 and 2009." So of the $24.2 billion made in US internet advertising, $10.8 billion was made by Google. Official looking document: http://www.sec.gov/Archives/edgar/data/1288776/000119312510030774/d10k.htm#toc95279_8 http://www.sec.gov/Archives/edgar/data/1288776/0001193125100...