Yahoo! Inc. (NASDAQ: YHOO) is an American public corporation headquartered in Sunnyvale, California, (in Silicon Valley), that provides Internet services worldwide. The company is perhaps best known for its web portal, search engine (Yahoo! Search), Yahoo! Directory, Yahoo! Mail, Yahoo! News, advertising, online mapping (Yahoo! Maps), video sharing (Yahoo! Video), and social media websites and services. As of January, 2010, Yahoo held the world's largest market share in online display advertising. JP Morgan put the company’s US market share for display ads at 17%, well ahead of No. 2 Microsoft at 11% and AOL at 7%.[3]
Yahoo! was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 1, 1995. On January 13, 2009, Yahoo! appointed Carol Bartz, former executive chairperson of Autodesk, as its new chief executive officer and a member of the board of directors.[4]
According to Web traffic analysis companies (including Compete.com, comScore,[5] Alexa Internet,[6] Netcraft,[7] and Nielsen ratings[8]), the domain yahoo.com attracted at least 1.575 billion visitors annually by 2008.[9] The global network of Yahoo! websites receives 3.4 billion page views per day on average as of October 2007[update].
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