Top 50 US ad carriers in August 2008

Rank Property Audience, 000 Reach %
  Total Internet : Total Audience 188,937 100%
1 Platform-A 170,728 90%
2 Google Ad Network 156,415 83%
3 Yahoo! Network 156,212 83%
4 Specific Media 152,501 81%
5 ValueClick Networks 150,813 80%
6 Tribal Fusion 142,840 76%
7 Yahoo! 139,807 74%
8 Google 136,484 72%
9 YuMe Video Network 129,871 69%
10 Casale Media – MediaNet 129,195 68%
11 Traffic Marketplace 128,893 68%
12 Tremor Media – Potential Reach 126,314 67%
13 Adconion Media Group 124,532 66%
14 24/7 Real Media 123,808 66%
15 interCLICK 122,478 65%
16 Revenue Science 121,893 65%
17 DRIVEpm 117,188 62%
18> CPX Interactive 115,710 61%
19 MSN-Windows Live 111,258 59%
20 AOL Media Network 110,623 59%
21 ADSDAQ by ContextWeb 108,574 57%
22 Collective Media 107,943 57%
23 Burst Media 96,648 51%
24 Turn, Inc 94,042 50%
25 Centro – Potential Reach 81,836 43%
26 Undertone Networks 81,639 43%
27 AdBrite 81,310 43%
28 MYSPACE.COM 75,491 40%
29 YOUTUBE.COM 75,425 40%
30 Vibrant Media 74,792 40%
31 NNN Total Newspapers: U.S. 72,202 38%
32 Gorilla Nation Media – Potential Reach 66,124 35%
33 Ybrant – Oridian – ADdynamix Network 61,066 32%
34 MSN.COM Home Page 58,727 31%
35 Ask Network 58,482 31%
36 EBAY.COM 58,303 31%
37 Pulse 360 57,646 31%
38 Kontera 55,288 29%
39 IAC Ad Solutions – Potential Reach 53,677 28%
40 Intergi – Potential Reach 52,461 28%
41 National Broadband Network 52,236 28%
42 IB Local Network 51,148 27%
43 NNN Top 25 49,070 26%
44 MapQuest 47,276 25%
45 AMAZON.COM 46,830 25%
46 AdOn Network 45,740 24%
47 TattoMedia 44,278 23%
48 QuadrantONE – Potential Reach 43,599 23%
49 EBAY.COM Home Page 41,831 22%
50 FACEBOOK.COM 40,959 22%
Source: comScore