> pitting advertisement buyers against each other in a bidding war. How else do you sell a limited resource that more than 1 person wants? On the other side o

> pitting advertisement buyers against each other in a bidding war. How else do you sell a limited resource that more than 1 person wants? On the other side of that bidding war is a publisher with an ad spot to sell. Sure Google takes a cut of that sale, but in every auction there is always a commission given to the auctioneer. No one is complaining about Sotheby's making a profit when they sell the latest Banksy painting for squillions.