Not seen a great deal on this one but the New Scientist dug into a recent Google patent application and found a very interesting tidbit.
The patent, filed December 21, 2006 with the USPTO (United States Patent and Trademark Office), covers systems and methods for allocating advertising space in a “network of electronic display devices.”
“Advertisers may upload advertisement messages to a server specifying information such as budget, price per impression, preferred billboards and/or other constraints. One or more keywords or other descriptors are specified for each advertisement message,”
You can see the full filing here.
