Position Auctions with Consumer Search
---- Acknowledgements -----
This work was supported by NSF grants SES-0550897 and SES-0351500 and the Toulouse Network for Information Technology. The views expressed herein are those of the author(s) and do not necessarily reflect the views of the National Bureau of Economic Research. Athey is Chief Economist at, and both authors have been employed as consultants by, the Microsoft Corporation, and in those capacities they have studied issues relating to this paper.