In August 2009, Americans conducted more than 13.9 billion core searches, with Google accounting for 64.6 percent search market share. Microsoft Sites grabbed 9.3 percent market share, a 0.4-percentage point gain versus July 2009.

You can keep up with my previous analysis of internet usage that I report every month or whenever new data is released.

Google led the U.S. core search market in August 2009 with 64.6 percent of the searches conducted, followed by Yahoo! (19.3 percent), and Microsoft (9.3 percent). Ask Network captured 3.9 percent of the search market, followed by AOL LLC with 3.0 percent.

* Based on the five major search engines including partner searches and
cross-channel searches. Searches for mapping, local directory, and
user-generated video sites that are not on the core domain of the five
search engines are not included in the core search numbers.

Americans conducted 13.9 billion searches in August, up 3 percent from July. Google Sites accounted for 9 billion searches, followed by Yahoo! Sites (2.7 billion), Microsoft Sites (1.3 billion), Ask Network (541 million) and AOL LLC (415 million).

* Based on the five major search engines including partner searches and
cross-channel searches. Searches for mapping, local directory, and
user-generated video sites that are not on the core domain of the five
search engines are not included in the core search numbers.

In the August 2009 analysis of the top properties where search activity is observed, Google Sites led the search market with 13 billion search queries, followed by Yahoo! Sites with 2.8 billion queries. Microsoft Sites ranked third with more than 1.3 billion searches, up 6 percent from July, followed by craigslist, inc. with 682 million searches. Facebook.com experienced the largest growth of the top ten expanded search properties with a 20-percent increase in query volume to 324 million searches.

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