RESTON, VA, April 15, 2015 – Comscore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released its monthly Comscore qSearch™ analysis of the U.S. desktop search marketplace. Google Sites led the explicit core search market in March with 64.4 percent of search queries conducted.

U.S. Explicit Core Search

Google Sites led the U.S. explicit core search market in March with 64.4 percent market share, followed by Microsoft Sites with 20.1 percent (up 0.3 percentage points) and Yahoo Sites with 12.7 percent. Ask Network accounted for 1.8 percent of explicit core searches, followed by AOL, Inc. with 1.1 percent.

Comscore Explicit Core Search Share Report* (Desktop Only)

March 2015 vs. February 2015

Total U.S. – Desktop Home & Work Locations

Source: Comscore qSearch

*“Explicit Core Search” excludes contextually driven searches that do not reflect specific user intent to interact with the search results.

18.9 billion explicit core searches were conducted in March, with Google Sites ranking first with 12.1 billion (up 11 percent). Microsoft Sites ranked second with 3.8 billion searches (up 12 percent), followed by Yahoo Sites with 2.4 billion (up 10 percent), Ask Network with 332 million (up 10 percent) and AOL, Inc. with 203 million (up 10 percent).

Comscore Explicit Core Search Query Report (Desktop Only)

March 2015 vs. February 2015

Total U.S. – Desktop Home & Work Locations

Source: Comscore qSearch

“Powered By” Reporting

In March, 65.5 percent of searches carried organic search results from Google, while 30.9 percent of searches were powered by Bing (up 0.1 percentage points).

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Comscore, Inc. (NASDAQ: SCOR) is a global leader in digital measurement and analytics, delivering insights on web, mobile and TV consumer behavior that enable clients to maximize the value of their digital investments. For more information, please visit www.comscore.com/companyinfo.