US Search Ad Revenue Market Share, 2011-2015 [TABLE]
Despite search growth, eMarketer estimates Yahoo! will continue to lose share of net US search ad revenues, dropping to 6.2% this year from 6.5% in 2012, as both Google and Microsoft make gains. eMarketer estimates that Google’s share of net US search ad revenues will reach 73.7% this year, up from 72.8% in 2012. Read the rest at eMarketer.