Common Agency and Coordinated Bids in Sponsored Search Auctions
AbstractAs auctions are becoming the main mechanism for selling advertisement space on the web, marketing agencies specialized in bidding in online auctions are proliferating. We analyze theoretically how bidding delegation to a common marketing agency can undermine both revenues and efficiency of the generalized second price auction, the format used by Google and Microsoft-Yahoo!. Our characterization allows us to quantify the revenue losses relative to both the case of full competition and the case of agency bidding under an alternative auction format (specifically, the VCG mechanism). We propose a simple algorithm that a search engine can use to reduce efficiency and revenue losses.
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Bibliographic InfoPaper provided by Society for Economic Dynamics in its series 2012 Meeting Papers with number 106.
Date of creation: 2012
Date of revision:
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Postal: Society for Economic Dynamics Christian Zimmermann Economic Research Federal Reserve Bank of St. Louis PO Box 442 St. Louis MO 63166-0442 USA
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Other versions of this item:
- Francesco Decarolis & Maris Goldmanis & Antonio Penta, 2013. "Common Agency and Coordinated Bids in Sponsored Search Auctions," Working Papers 13-19, NET Institute.
- C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
- D44 - Microeconomics - - Market Structure and Pricing - - - Auctions
- L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
- L81 - Industrial Organization - - Industry Studies: Services - - - Retail and Wholesale Trade; e-Commerce
- M37 - Business Administration and Business Economics; Marketing; Accounting - - Marketing and Advertising - - - Advertising
This paper has been announced in the following NEP Reports:
- NEP-ALL-2012-11-11 (All new papers)
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