The cooperation of Microsoft and Yahoo in the search engine market leads to a significant shift in market shares. Google by far still has the largest reach, but Microsoft with its search engine Bing and Yahoo together now have a market share of 26 % in the US market, Hitwise Intelligence reports. By this analysts do expect movements in the search engine advertising market, too.

Bing + Yahoo! Now Equals 26% of Search Market

Directory Sources: Business Networking, Document Sharing – Search Engine Marketing