The Wall Street Journal reports online ad networks are experiencing contractions in advertiser spending amid this economic cycle’s deceleration.
The Journal also suggests the decade old online ad network industry and its 300+ web ad brokers are in the process of experiencing a contraction in their numbers as well.
The Top 10 Online Ad Networks by number of unique visitors according to comScore are:
Top 10 Online Ad Networks
1. AOL’s Platform A
2. Yahoo Network
3. Google Ad Network
4. Specific Media
5. ValueClick Networks
6. Tribal Fusion
7. Traffic Marketplace
8. 24/7 Real Media
9. Casale Media Network
10. Adconion Media Group
In this industry’s contraction, will the reduction in the 300+ online ad networks reduce the overall supply of online ad availability to ad buyers?
Or will the industry’s excess ad supply end up being provided for out of its surviving web ad brokers inventory?
My guess is no one but those who once worked for the soon to be shuttered web ad brokers will notice they have stop supplying ads.
Search Marketing Communications 
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