The top five ad networks held their place in April, according to data listing ad networks and ad-supported properties from comScore‘s Ad Focus Rankings. Unique visitors remained somewhat flat, lifting only slightly from March levels.
MSN.com reappeared on the list at number 26 with 111.8 million unique visitors in April. Gorilla Nation dropped from the rankings. The ad rep firm had held the rank of 29 in March, with a unique audience of 83.3 million. With the ads Gorilla Nation accounted for, it had increased its reach from 33 percent in February to 43 percent in March. In April it was somewhere below 26 percent.
ComScore measures Internet usage from a global panel of home, work, and university Internet users.
|Top 50 U.S. Ad Networks by Unique Visitor, April 2009|
|Rank||Ad Network||Unique Visitors (000)||Reach (%)||Rank||Ad Network||Unique Visitors (000)||Reach (%)|
|1||Platform-A**||176,455||91||26||MSN Windows Live||111,783||58|
|2||Yahoo network**||167,129||87||27||AOL Media Network||107,469||56|
|3||Google Ad Network**||164,518||85||28||BrightRoll Video Network||99,911||52|
|4||ValueClick Networks**||160,307||83||29||Undertone Networks**||97,053||50|
|6||Fox audience network**||149,249||77||31||YouTube*||89,697||47|
|7||Yahoo sites||149,118||77||32||Pulse 360**||82,574||43|
|9||24/7 Real Media**||147,668||77||34||Centro||75,551||39|
|10||Traffic Marketplace**||143,519||74||35||National Newspaper Network: total U.S. newspapers||74,415||39|
|11||Tremor Media||141,971||74||36||Ask Network||73,491||38|
|12||Microsoft Media Network (U.S.)**||139,674||72||37||Adify**||73,467||38|
|14||Casale Media MediaNet**||137,884||71||39||Monster Career Ad Network||72,225||37|
|17||Turn Inc**||134,028||69||42||ITN Networks||66,578||35|
|18||Adconion Media Group**||133,498||69||43||Tattoo Media**||63,379||33|
|20||Collective Network**||129,808||67||45||IAC Ad Solutions||57,650||30|
|22||Platform-A video network||121,949||63||47||Glam Media||54,485||28|
|23||AudienceScience (formerly RevenueScience)**||121,001||60||48||Amazon.com||52,058||27|
|24||Burst Media**||116,727||61||49||National Newspaper Network: top 25 newspapers||50,644||26|
|25||Digital Broadcasting Group||112,646||56||50||Business.com||48,692||25|
1. Reach denotes the percentage of the total Internet population that viewed a particular entity at least once in August.
2. ** denotes an advertising network.
3. * denotes entity has assigned some portion of traffic to other syndicated entities.
4. The Platform A ad network is an aggregation of ad servers used by the following individual advertising network entities: Advertising.com, Tacoda, AOL, Quigo, and Userplan.
|Source: comScore, 2009|
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