Microsoft and Yahoo: What Does It Mean? by Chris Trayhorn, Publisher of mThink Blue Book, July 30, 2009 Microsoft and Yahoo, after a long courtship, finally got hitched and announced a 10-year deal in which Microsoft’s Bing search technology will power Yahoo’s sites. A quick summary of the deal from the perspective of an advertiser: The deal combines Yahoo’s 19.6% of U.S. search traffic with Microsoft’s 8.4% to give the new partnership a 28% market share. This compares to Google’s share of 65%. All self-serve advertising will be integrated into Microsoft’s AdCenter. Display advertising will remain separate and will be sold by Yahoo’s worldwide sales team. Microsoft gains access to Yahoo’s search indexes and technologies. Filed under: Revenue About the Author Chris Trayhorn, Publisher of mThink Blue Book Chris Trayhorn is the Chairman of the Performance Marketing Industry Blue Ribbon Panel and the CEO of mThink.com, a leading online and content marketing agency. He has founded four successful marketing companies in London and San Francisco in the last 15 years, and is currently the founder and publisher of Revenue+Performance magazine, the magazine of the performance marketing industry since 2002.