Top U.S. Ad Networks, January 2009

AOL’s Platform-A maintained its significant consumer reach in January of 91 percent, or over 173 million unique visitors to its network. ComScore measured a panel of 190.7 million unique visitors to ad networks and sites in its AdFocus rankings.

ComScore measures Internet usage from a global panel of home, work, and university Internet users.

Top 50 U.S. Ad Networks by Unique Visitor, January 2009
Rank Ad Network Unique Visitors (000) Reach (%) Rank Ad Network Unique Visitors (000) Reach (%)
Total 191,863 100
1 Platform-A** 174,586 91 26 AdBrite** 89,649 47
2 Yahoo network** 164,712 86 27 YouTube 82,772 43
3 ValueClick Networks** 160,261 84 28 Centro 81,559 43
4 Google Ad Network** 158,481 83 29 Vibrant Media** 79,908 42
5 Traffic Marketplace** 146,903 77 30 MySpace* 75,639 39
6 Yahoo sites 146,131 76 31 National Newspaper Network: total U.S. newspapers 74,800 39
7 Specific Media** 145,929 76 32 Ask network 74,742 39
8 Tribal Fusion** 143,869 75 33 Pulse 360** 71,075 37
9 Google 143,116 75 34 Gorilla Nation Media 68,684 36
10 24/7 Real Media** 141,604 74 35 IAC Ad Solutions 66,759 35
11 Tremor Media 136,867 71 36 Undertone Networks** 66,083 34
12 Casale Media** 136,772 72 37 Career Ad Network** 65,936 34
13 Turn Inc.** 132,949 69 38 ITN digital network 65,705 34
14 Adconian Media Group 130,717 68 39 Kontera** 64,928 34
15 interCLICK** 126,706 66 40 Tattoo Media** 61,677 32
16 CPX Interactive** 125,764 66 41 IB Local Network 58,414 30
17 DRIVEpm 125,255 65 42 eBay 57,520 30
18 ADSDAQ (ContextWeb)** 121,022 63 43 Adify** 57,380 30
19 Revenue Science** 114,122 59 44 Facebook 57,232 30
20 Digital Broadcasting Group 111,698 58 45 MSN.com 54,481 29
21 MSN Windows Live 111,695 58 46 Glam Media 55,293 29
22 Collective Network** 111,322 58 47 Amazon.com 54,562 28
23 Burst Media** 109,043 57 48 National Newspaper Network: top 25 newspapers 52,326 27
24 AOL Media Network 108,441 57 49 Business.com 51,586 27
25 BrightRoll 98,179 51 50 QuadrantONE 47,754 25
Notes:
1. Reach denotes the percentage of the total Internet population that viewed a particular entity at least once in August.
2. * denotes entity has assigned some portion of traffic to other syndicated entities.
3. ** denotes an advertising network.
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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