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E-commerce, two-sided markets and info-mediation

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Author Info
Alexandre Gaudeul (University of East Anglia - Norwich and ESRC-CCP)
Bruno Jullien (IDEI - GREMAQ - University of Toulouse)

Additional information is available for the following registered author(s):

Abstract

Participants in a market, buyers and sellers, may need the service of an intermediary who will put them into contact and give them information about their potential trading partner. The intermediary chooses what price it will charge to each side to have access to its service. It also chooses what information it will reveal, for example to the buyer about the value of the seller’s product. In a market with network externalities, it would be optimal that everybody had access to the other side, as each side wants as many agents from the other side to be present as possible. This is however not feasible as the intermediary must charge positive access prices if it is to make any profit. In a market with asymmetric information, it would be optimal that all information about the buyers’ and sellers’ valuation for the traded product be available, but the intermediary will want to conceal or manipulate that information to increase its profit. The paper examines in the first part how network externalities play out in the intermediary’s access pricing strategies in both a monopoly and a competitive setting. In the second part, the paper shows how the intermediary will strategically manipulate and conceal information to extract the surplus from trade in the market it intermediates.

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Publisher Info
Paper provided by EconWPA in its series Industrial Organization with number 0503014.

Download reference. The following formats are available: HTML (with abstract), plain text (with abstract), BibTeX, RIS (EndNote, RefMan, ProCite), ReDIF
Length: 30 pages
Date of creation: 31 Mar 2005
Date of revision: 05 Apr 2005
Handle: RePEc:wpa:wuwpio:0503014

Note: Type of Document - pdf; pages: 30
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Web page: http://129.3.20.41

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Related research
Keywords: Intermediation; internet; asymmetric information; information goods; network effects; two sided markets; matching.;

Other versions of this item:

Find related papers by JEL classification:
D4 - Microeconomics - - Market Structure and Pricing
L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance

This paper has been announced in the following NEP Reports:

References listed on IDEAS
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  1. Alessandro Lizzeri, 1999. "Information Revelation and Certification Intermediaries," RAND Journal of Economics, The RAND Corporation, vol. 30(2), pages 214-231, Summer. [Downloadable!] (restricted)
  2. Albano, Gian Luigi & Lizzeri, Alessandro, 2001. "Strategic Certification and Provision of Quality," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 42(1), pages 267-83, February.
  3. Caillaud, Bernard & Jullien, Bruno, 2001. "Competing cybermediaries," European Economic Review, Elsevier, vol. 45(4-6), pages 797-808, May. [Downloadable!] (restricted)
  4. Gerardo A. Guerra, 2001. "Certification Disclosure and Informational Efficiency: A Case for Ordered Ranking of Levels," Economics Series Working Papers 064, University of Oxford, Department of Economics. [Downloadable!]
    Other versions:
  5. Roland Strausz, . "Honest Certification and the Threat of Capture," Papers 018, Departmental Working Papers. [Downloadable!]
    Other versions:
  6. Okuno-Fujiwara, Masahiro & Postlewaite, Andrew & Suzumura, Kotaro, 1990. "Strategic Information Revelation," Review of Economic Studies, Blackwell Publishing, vol. 57(1), pages 25-47, January. [Downloadable!] (restricted)
  7. Michael R. Baye & John Morgan, 2001. "Information Gatekeepers on the Internet and the Competitiveness of Homogeneous Product Markets," American Economic Review, American Economic Association, vol. 91(3), pages 454-474, June. [Downloadable!] (restricted)
  8. Khalil, Fahad & Lawarree, Jacques, 1995. "Collusive Auditors," American Economic Review, American Economic Association, vol. 85(2), pages 442-46, May. [Downloadable!] (restricted)
  9. Alexandre Gaudeul, 2004. "Internet Intermediaries' Editorial Content Quality," Industrial Organization 0409005, EconWPA. [Downloadable!]
  10. Asher Wolinsky, 1993. "Competition in a Market for Informed Experts' Services," RAND Journal of Economics, The RAND Corporation, vol. 24(3), pages 380-398, Autumn. [Downloadable!] (restricted)
  11. Jean-Charles Rochet & Jean Tirole, 2002. "Cooperation Among Competitors: Some Economics Of Payment Card Associations," RAND Journal of Economics, The RAND Corporation, vol. 33(4), pages 549-570, Winter.
  12. Josh Lerner & Jean Tirole, 2004. "A Model of Forum Shopping, with Special Reference to Standard Setting Organizations," NBER Working Papers 10664, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
  13. Paul R. Milgrom, 1981. "Good News and Bad News: Representation Theorems and Applications," Bell Journal of Economics, The RAND Corporation, vol. 12(2), pages 380-391, Autumn. [Downloadable!] (restricted)
    Other versions:
  14. Mark Armstrong, 2005. "Competition in Two-Sided Markets," Industrial Organization 0505009, EconWPA. [Downloadable!]
    Other versions:
  15. Crawford, Vincent P & Sobel, Joel, 1982. "Strategic Information Transmission," Econometrica, Econometric Society, vol. 50(6), pages 1431-51, November. [Downloadable!] (restricted)
  16. David P. Baron & David Besanko, 1984. "Regulation, Asymmetric Information, and Auditing," RAND Journal of Economics, The RAND Corporation, vol. 15(4), pages 447-470, Winter. [Downloadable!] (restricted)
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