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Scamming and the Reputation of Drug Dealers on Darknet Markets

Author

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  • Romain Espinosa

    (CREM - Centre de recherche en économie et management - UNICAEN - Université de Caen Normandie - NU - Normandie Université - UR - Université de Rennes - CNRS - Centre National de la Recherche Scientifique)

Abstract

In this paper I investigate the role of e-reputation mechanisms on illegal platforms that specialize in drug sales. I ask whether online reputation systems can limit the risk of scamming (i.e. fraud) by dishonest sellers, and thus prevent Akerlof-like market destruction. I do so by analyzing all published offers on the second-largest platform operating on March 18th 2017 (Hansa). Three types of drugs show relatively low scamming risks, with the average probability that a random seller effectively send the ordered good of over 83%. The recent shutdowns of the two leading platforms are likely to increase this probability by 2.7 to 9.7%. Endogeneity may either lead us to overestimate the effect of e-reputation mechanisms (e.g., unobserved heterogeneity in sellers) or underestimate it (e.g., better-functioning markets may attract more scammers).

Suggested Citation

  • Romain Espinosa, 2019. "Scamming and the Reputation of Drug Dealers on Darknet Markets," Post-Print halshs-02180182, HAL.
    • Handle: RePEc:hal:journl:halshs-02180182
    DOI: 10.1016/j.ijindorg.2019.102523
    Note: View the original document on HAL open archive server: https://shs.hal.science/halshs-02180182v2
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    References listed on IDEAS

    as
    1. W. Bentley MacLeod, 2007. "Reputations, Relationships, and Contract Enforcement," Journal of Economic Literature, American Economic Association, vol. 45(3), pages 595-628, September.
    2. Patrick Bajari & Ali Hortaçsu, 2004. "Economic Insights from Internet Auctions," Journal of Economic Literature, American Economic Association, vol. 42(2), pages 457-486, June.
    3. Michael Anderson & Jeremy Magruder, 2012. "Learning from the Crowd: Regression Discontinuity Estimates of the Effects of an Online Review Database," Economic Journal, Royal Economic Society, vol. 122(563), pages 957-989, September.
    4. Mikhail I Melnik & James Alm, 2002. "Does a Seller’s eCommerce Reputation Matter? Evidence from eBay Auctions," Journal of Industrial Economics, Wiley Blackwell, vol. 50(3), pages 337-349, September.
    5. Daniel Houser & John Wooders, 2006. "Reputation in Auctions: Theory, and Evidence from eBay," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 15(2), pages 353-369, June.
    6. repec:bla:jindec:v:50:y:2002:i:3:p:337-49 is not listed on IDEAS
    7. Hardy, Robert Augustus & Norgaard, Julia R., 2016. "Reputation in the Internet black market: an empirical and theoretical analysis of the Deep Web," Journal of Institutional Economics, Cambridge University Press, vol. 12(3), pages 515-539, September.
    8. Carl Shapiro, 1983. "Premiums for High Quality Products as Returns to Reputations," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 98(4), pages 659-679.
    9. Luís Cabral & Ali Hortaçsu, 2010. "The Dynamics Of Seller Reputation: Evidence From Ebay," Journal of Industrial Economics, Wiley Blackwell, vol. 58(1), pages 54-78, March.
    10. Chrysanthos Dellarocas & Charles A. Wood, 2008. "The Sound of Silence in Online Feedback: Estimating Trading Risks in the Presence of Reporting Bias," Management Science, INFORMS, vol. 54(3), pages 460-476, March.
    11. George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 84(3), pages 488-500.
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    Cited by:

    1. Zambiasi, Diego, 2022. "Drugs on the Web, Crime in the Streets. The Impact of Shutdowns of Dark Net Marketplaces on Street Crime," Journal of Economic Behavior & Organization, Elsevier, vol. 202(C), pages 274-306.
    2. Diego Zambiasi, 2020. "Drugs on the Web, Crime in the Streets - The Impact of Dark Web Marketplaces on Street Crime," Working Papers 202025, School of Economics, University College Dublin.
    3. Nicolas Eschenbaum & Helge Liebert, 2021. "Dealing with Uncertainty: The Value of Reputation in the Absence of Legal Institutions," Papers 2107.11314, arXiv.org.
    4. Solimine, Philip & Isaac, R. Mark, 2023. "Reputation and market structure in experimental platforms," Journal of Economic Behavior & Organization, Elsevier, vol. 205(C), pages 528-559.

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    More about this item

    Keywords

    Darknet markets; Hansa; e-reputation; scamming; drug price; honesty;
    All these keywords.

    JEL classification:

    • L14 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Transactional Relationships; Contracts and Reputation
    • L15 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Information and Product Quality
    • K42 - Law and Economics - - Legal Procedure, the Legal System, and Illegal Behavior - - - Illegal Behavior and the Enforcement of Law
    • K24 - Law and Economics - - Regulation and Business Law - - - Cyber Law

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