comScore released its December 2010 qSearch analysis of the U.S. search marketplace.
Google Sites led the explicit core search market in Dec with 66.6% market share (up 0.4%tage points), followed by Yahoo! Sites 16.0% and Microsoft 12.0% (up 0.2%tage points).
> 16.4 billion explicit core searches were conducted in Dec. Google Sites ranked first with nearly 11.0 billion searches, up 3%, Yahoo! Sites came in second with 2.6 billion, followed by Microsoft Sites with nearly 2.0 billion (up 4%).
Google Sites accounted for 64.3% of total core search queries conducted, followed by Yahoo! Sites with 18.8% and Microsoft Sites with 12.0% (up 0.7%tage points).
Americans conducted 18.2 billion total core search queries in Dec. Google Sites ranked first with 11.7 billion searches, followed by Yahoo! Sites with 3.4 billion and Microsoft Sites with 2.2 billion.