Google's search market share edges up in September - comScore

Google Inc.'s dominant share of the U.S. Internet-search market edged up 0.5 percentage point in September from the prior month, as rival Yahoo Inc.'s share declined 0.8 percentage point, according to comScore Inc. The market researcher said Google's search market share was 65.3% in September.

Yahoo's sites declined to 15.5% market share. Microsoft's sites, including its Bing search engine, and IAC/InterActiveCorp.'s Ask.com had unchanged market shares at 14.7% and 3% respectively. AOL Inc.'s share gained 0.2 percentage point to 1.5%.

Users made 17.1 billion explicit core searches in September. Google's sites again ranked in first place with 11.17 billion, followed by Yahoo's 2.64 billion and Microsoft's 2.52 billion.

ComScore has shifted how it reports its data after Yahoo's "contextual searches" skewed results last summer. The group measures U.S. explicit core searches, which exclude contextual searches that don't reflect any intent by users.

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