Very interesting to read about how Google's advertising business is evolving.
"Google isn't quite pursuing that sort of deal, but it is trying to have big retailers link their inventory systems directly to its advertising auction. That way, a toy store chain, for example, could respond to a search for dolls with an ad for either Barbies or Bratz, depending on which were overstocked in the store near the user's home. "Most retailers only advertise 5 percent of their products," said Tim Armstrong, Google's vice president for ad sales. "We can let them advertise all of them."