The Reston Virginia based internet researcher, comScore, Inc. on Thursday (June 17, 2009) released its monthly comScore qSearch analysis of the U. S. search marketplace. The comScore analysis found that in May 2009, Americans conducted 14.3 billion core searches.

According to the comScore analysis, Google Sites led the U. S. core search market in April with 65.0 percent of the searches conducted, followed by Yahoo! Sites (20.1 percent), Microsoft Sites (8.0 percent), Ask Network (3.9 percent) and AOL LLC (3.1 percent).

The comScore analysis discovered that Americans conducted 14.3 billion searches at the core search engines. Google Sites accounted for 9.3 billion core searches, followed by Yahoo! Sites with 2.9 billion and Microsoft Sites with 1.1 billion.

In the comScore May 2009 analysis of the top properties where search activity is observed, Google Sites led with 13 billion searches. Yahoo! Sites ranked second with 3 billion searches, followed by Microsoft Sites (1.2 billion) and AOL LLC (721 million).