"The Google Display Advertising Network was created so Google can go after Fortune 1000 companies, which buy advertising to build a brand more than to sell a product. (...) Every display network member negotiates a flat CPM rate with Google. The contracts are one year long and publishers have to guarantee Google that they will provide a minimum amount of ad inventory each month."
There's no mention of this network on Google's sites and the only way to become a part of it is to be invited by Google.
.jpg)
.jpg)
