Google has announced the DoubleClick Ad Exchange, which it refers to as a real-time marketplace for helping online publishers and ad networks/agencies buy and sell display ad space. Prices in the marketplace are set in a real-time auction.

Google says it has three principles for its approach to display advertising:

Google is trying to get advertising agencies to warm up to it after years of not being their favorite entity. After all, think of all the marketing dollars spent on search engine advertising (and SEO campaigns for that matter) that agencies missed out on because of a certain search giant.

Google Shows Off