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This is not 100% search related but I figure it is important to note here, at least for future reference, when it ties into search later. Google acquired (or is trying ti acquire) a company named Invite Media.
Google said:
The team at Invite Media has developed technology that enables advertisers and agencies to use "real time bidding" to buy display ad space, and to optimize display ad campaigns, across multiple advertising exchanges, all in a single interface.
You can read more from Google over here.
Forum discussion at WebmasterWorld.
