2. Percentage of US Searches Among Leading Search Engine Providers Domain Mar 2007 Feb 2007 Mar 2006 www.google.com 64.13% 63.90% 58.33% search.yahoo.com 21.26% 21.47% 22.30% search.msn.com 9.15%* 9.30%* 13.09% www.ask.com 3.48% 3.52% 3.99% (Source: Hitwise)