comScore Releases April 2009 U.S. Ranking of Top 25 Ad Networks

Ad Operations OnlineAOL’s Platform-A Ranks #1 Among Ad Networks, Followed by Yahoo! Network and Google Ad Network

RESTON, VA – comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world today reported the top 25 ad networks based on their reach among U.S. Internet users in April 2009. The ranking showed that AOL’s Platform-A remains the top ad network, reaching nearly 176.5 million U.S. Internet users, or 91.5 percent of the total audience, followed by Yahoo! Network (167.1 million) and Google Ad Network (164.5 million). New ad network FOX Audience Network ranked sixth, reaching 149.2 million people. Several ad networks in the top 25 achieved double-digit growth during the past year, led by Turn Inc. (up 121 percent), CPX Interactive (up 88 percent) and 24/7 Real Media (up 48 percent).

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Top 25 Ad Networks

April 2009 vs. April 2008

Total U.S. – Home/Work/University Locations

Source: comScore Media Metrix

Total Unique Visitors (000)
Apr-2008        Apr-2009       % Change

Total Internet: Total Audience          190,728         192,875           1

Platform-A                              170,508         176,455           3
Yahoo! Network                          160,206         167,129           4
Google Ad Network                       155,882         164,518           6
ValueClick Networks                     140,930         160,307          14
Specific Media                          144,773         158,012           9
FOX Audience Network                        N/A         149,249         N/A
24/7 Real Media                          99,959         147,668          48
Traffic Marketplace                     114,682         143,519          25
Microsoft Media Network US              119,595         139,674          17
Tribal Fusion                           135,113         138,274           2
Casale Media – MediaNet                 127,184         137,884           8
interCLICK                              107,961         134,834          25
Turn, Inc                                60,617         134,028         121
Adconion Media Group                    117,965         133,498          13
CPX Interactive                          69,178         130,370          88
Collective Network by Collective Media   88,279         129,808          47
ADSDAQ by ContextWeb                     93,815         123,534          32
AudienceScience (formerly Revenue Science)  N/A         121,001         N/A
Burst Media                              89,670         116,727          30
Undertone Networks                       72,940          97,053          33
AdBrite                                  81,838          91,033          11
Pulse 360                                   N/A          82,574         N/A
Vibrant Media                            72,351          80,779          12
Adify                                       N/A          73,467         N/A
Kontera                                  52,159          72,870          40
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“Underscoring the growing importance of ad networks to the digital advertising economy, each of the top 25 ad networks has expanded its reach during the past year,” commented Jack Flanagan, comScore executive vice president. “It almost seems that new ad networks are emerging every day, each aimed at helping advertisers achieve their campaign objectives, whether it’s to deliver reach and frequency or to target a specific audience segment.”

About comScore
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