The idea of an ad exchange is similar to a stock exchange, where buyers and sellers work through a broker. Similarly, AdECN does not do business directly with advertisers or publishers; it works instead with ad networks, ad brokers, and a few ad agencies that maintain relationships with buyers and sellers, acting as a network themselves.
If you're keeping score, that leaves newcomer ContextWeb and its ADSDAQ exchange as the last independent player standing in the ad exchange space.
Upcoming Webinar: PPC Pause and Reflections for 2013
Thursday, December 12 - 2013 was a major turning point in search advertising. With Google's Enhanced Campaigns and Bing's innovative Smart Search capabilities in Windows 8.1, now is a great time to pause, reflect, and plan for the new year. Webinar attendance is free. Sign up today!