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RESTON, VA, March 10, 2010 – comScore, Inc. (NASDAQ: SCOR) today released its monthly comScore qSearch analysis of the U.S. search marketplace. In February 2010, Americans conducted 14.5 billion core searches, with Google Sites accounting for 65.5 percent search market share.

February 2010 U.S. Core Search Rankings

Google Sites led the U.S. core search market in February with 65.5 percent of the searches conducted, followed by Yahoo! Sites (16.8 percent), and Microsoft Sites (11.5 percent). Ask Network captured 3.7 percent of the search market, followed by AOL LLC with 2.5 percent.

Google received 71 percent of U.S. searches; Length of eight-plus keyword searches increases 4 percent

New York, N.Y., March 10, 2010 - Experian® Hitwise® announced today that Google accounted for 70.95 percent of all U.S. searches conducted in the four weeks ending Feb. 27, 2010. Yahoo! Search, Bing and Ask.com received 14.57 percent, 9.70 percent and 2.84 percent, respectively.

The remaining 73 search engines in the Hitwise Search Engine Analysis Tool accounted for 1.94 percent of U.S. searches.

Longer searches increase this past month

Google received 71 percent of U.S. Searches

New York, N.Y., Feb. 10, 2010 - Experian Hitwise announced today that Google accounted for 71.49 percent of all U.S. searches conducted in the four weeks ending Jan. 31, 2010.

Yahoo! Search, Bing and Ask.com received 14.57 percent, 9.37 percent and 2.64 percent, respectively.

The remaining 65 search engines in the Hitwise Search Engine Analysis Tool accounted for 1.93 percent of U.S. searches.

RESTON, VA, January 15, 2010 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly comScore qSearch analysis of the U.S. search marketplace.

In December 2009, Americans conducted 14.7 billion core searches, with Google Sites accounting for 65.7 percent search market share, virtually unchanged from 65.6 percent in November. Microsoft Sites grabbed 10.7 percent market share, up 0.4 percentage points versus November.

December 2009 U.S. Core Search Rankings

Bing continues to see growth to verticals

New York, N.Y., Jan. 14, 2010 - Experian® Hitwise® announced today that Google accounted for 72.25 percent of all U.S. searches conducted in the four weeks ending Jan. 2, 2010. Yahoo! Search, Bing and Ask.com received 14.83 percent, 8.92 percent and 2.54 percent, respectively.

The remaining 66 search engines in the Hitwise Search Engine Analysis Tool accounted for 1.48 percent of U.S. searches.

RESTON, VA, December 16, 2009 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly comScore qSearch analysis of the U.S. search marketplace.

In November 2009, Americans conducted 14.4 billion core searches, with Google Sites accounting for 65.6 percent search market share, up slightly from 65.4 percent in October. Microsoft Sites grabbed 10.3 percent market share, up 0.4 percentage points versus October.

November 2009 U.S. Core Search Rankings

Ask.com sees 1 percent increase

New York, N.Y., Dec. 9, 2009 - Experian Hitwise announced today that Google accounted for 71.57 percent of all U.S. searches conducted in the four weeks ending Nov. 28, 2009.

Yahoo! Search, Bing and Ask.com received 15.39 percent, 9.34 percent and 2.65 percent, respectively. The remaining 52 search engines in the Hitwise Search Engine Analysis Tool accounted for 1.07 percent of U.S. searches.

RESTON, VA, November 17, 2009 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly comScore qSearch analysis of the U.S. search marketplace. In October 2009, Americans conducted 14.3 billion core searches, with Google Sites accounting for 65.4 percent search market share, up from 64.9 percent in September. Microsoft Sites grabbed 9.9 percent market share, up 0.5 percentage points versus September.

October 2009 U.S. Core Search Rankings

Ask.com increases 11 percent this past month

New York, N.Y., Oct. 19, 2009 - Experian® Hitwise® announced today that Google search properties accounted for 80.46 percent of all Canadian searches conducted in the 12 weeks ending Oct. 3, 2009. Yahoo! search properties, Bing search properties and Ask search properties received 7.99 percent, 7.65 percent and 3.09 percent, respectively.

The remaining 46 search engines in the Experian Hitwise Search Engine Analysis Tool accounted for 1 percent of Canadian searches.

RESTON, VA, September 22, 2009 – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly comScore qSearch analysis of the U.S. search marketplace. In August 2009, Americans conducted more than 13.9 billion core searches, with Google Sites accounting for 64.6 percent search market share. Microsoft Sites grabbed 9.3 percent market share, a 0.4-percentage point gain versus July.

August 2009 U.S. Core Search Rankings