comScore Releases March 2009 U.S. Search Engine Rankings

RESTON, Va., April 15 -- 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 March 2009, Americans conducted 14.3 billion core searches, a 9-percent gain versus February.

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  March 2009 U.S. Core Search Rankings

Google Sites led the U.S. core search market in March with 63.7 percent of the searches conducted, followed by Yahoo! Sites (20.5 percent), Microsoft Sites (8.3 percent), Ask Network (3.8 percent) and AOL LLC (3.7 percent).

  comScore Core Search Report*
  March 2009 vs. February 2009
  Total U.S. - Home/Work/University Locations
  Source: comScore qSearch

                                         Share of Searches (%)

                                                           Point Change
  Core Search Entity          Feb-09           Mar-09    Mar-09 vs. Feb-09
  Total Core Search            100.0            100.0            N/A
  Google Sites                  63.3             63.7            0.4
  Yahoo! Sites                  20.6             20.5           -0.1
  Microsoft Sites                8.2              8.3            0.1
  Ask Network                    4.1              3.8           -0.3
  AOL LLC                        3.9              3.7           -0.2

  * Based on the five major search engines including partner searches
  and cross-channel searches. Searches for mapping, local directory,
  and user-generated video sites that are not on the core domain of the
  five search engines are not included in the core search numbers.

Americans conducted 14.3 billion searches at the core search engines, up 9 percent from February. Google Sites accounted for 9.1 billion core searches, followed by Yahoo! Sites with 2.9 billion and Microsoft Sites with 1.2 billion.

  comScore Core Search Report*
  March 2009 vs. February 2009
  Total U.S. - Home/Work/University Locations
  Source: comScore qSearch

                                          Search Queries (MM)

                                                            Percent Change
  Core Search Entity          Feb-09           Mar-09      Mar-09 vs. Feb-09
  Total Core Search           13,104           14,331             9%
  Google Sites                 8,293            9,125            10%
  Yahoo! Sites                 2,696            2,939             9%
  Microsoft Sites              1,073            1,191            11%
  Ask Network                    536              547             2%
  AOL LLC                        507              529             4%

  * Based on the five major search engines including partner searches
  and cross-channel searches. Searches for mapping, local directory,
  and user-generated video sites that are not on the core domain of
  the five search engines are not included in the core search numbers.

  March 2009 U.S. Expanded Search Rankings

In the comScore March 2009 analysis of the top properties where search activity is observed, Google Sites led with 12.4 billion searches, up 10 percent versus February. Yahoo! Sites ranked second with 3.1 billion searches, followed by Microsoft Sites (1.2 billion) and AOL LLC (813 million).

  comScore Expanded Search Query Report
  March 2009 vs. February 2009
  Total U.S. - Home/Work/University Locations
  Source: comScore qSearch

                                        Search Queries (MM)

                                                            Percent Change
  Expanded Search Entity      Feb-09           Mar-09      Mar-09 vs. Feb-09
  Total Expanded Search       19,176           21,038            10%
  Google Sites                11,250           12,362            10%
       Google                  8,541            9,419            10%
       YouTube/All Other       2,709            2,943             9%
  Yahoo! Sites                 2,828            3,083             9%
       Yahoo!                  2,804            3,058             9%
       All Other                  24               25             4%
  Microsoft Sites              1,109            1,235            11%
       MSN-Windows Live        1,015            1,136            12%
       Microsoft/All Other        94               99             5%
  AOL LLC                        761              813             7%
       AOL Search Network        439              445             1%
       MapQuest/All Other        322              368            14%
  Ask Network                    678              696             3%
       Ask.com                   384              382            -1%
       MyWebSearch.com/All
        Other                    294              314             7%
  Fox Interactive Media          487              581            19%
       MySpace                   479              573            20%
       All Other                   8                8             0%
  craigslist, inc.               511              559             9%
  eBay                           513              545             6%
  Facebook.com                   206              246            19%
  Amazon Sites                   170              191            12%

  About comScore

comScore, Inc. (NASDAQ:SCOR) is a global leader in measuring the digital world and preferred source of digital marketing intelligence. For more information, please visit www.comscore.com/companyinfo