RESTON, Va., May 25 /PRNewswire/ -- comScore, a leader in measuring the digital world, today released its monthly qSearch analysis of activity across competitive search engines. In April 2007, Google Sites captured 49.7 percent of the U.S. search market, gaining 1.4 share points from the previous month. Yahoo! Sites maintained its second place ranking with 26.8 percent of U.S. searches, followed by Microsoft Sites (10.3 percent), Ask Network (5.1 percent) and Time Warner Network (5.0 percent). Share of Online Searches by Engine March 2007 - April 2007 Total U.S. Home, Work and University Internet Users Source: comScore qSearch Mar-07 Apr-07 Pt Chg vs. Previous Month Total Internet Population 100.0 % 100.0 % N/A Google Sites 48.3 % 49.7 % 1.4 Yahoo! Sites 27.5 % 26.8 % -0.7 Microsoft Sites 10.9 % 10.3 % -0.6 Ask Network 5.2 % 5.1 % -0.1 Time Warner Network 5.0 % 5.0 % 0.0 -- Americans conducted 7.3 billion searches online in April, virtually unchanged versus March and up 11 percent versus April 2006. -- Google Sites led the pack with 3.6 billion search queries performed, followed by Yahoo Sites (2.0 billion), Microsoft Sites (757 million), Ask Network (376 million), and Time Warner Network (364 million). For more information on comScore qSearch, please email firstname.lastname@example.org or call(650) 244-5412. About comScore comScore, Inc. is a global leader in measuring the digital world. This capability is based on a massive, global cross-section of more than 2 million consumers who have given comScore permission to confidentially capture their browsing and transaction behavior, including online and offline purchasing. comScore panelists also participate in survey research that captures and integrates their attitudes and intentions. Through its proprietary technology, comScore measures what matters across a broad spectrum of behavior and attitudes. comScore analysts apply this deep knowledge of customers and competitors to help clients design powerful marketing strategies and tactics that deliver superior ROI. comScore services are used by more than 700 clients, including global leaders such as AOL, Microsoft, Yahoo!, Verizon, Best Buy, The Newspaper Association of America, Tribune Interactive, ESPN, Fox Sports, Nestle, MBNA, Universal McCann, the United States Postal Service, Merck and Expedia. For more information, please visit http://www.comscore.com.