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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. 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.
    2. Nicolas Eschenbaum & Helge Liebert, 2021. "Dealing with Uncertainty: The Value of Reputation in the Absence of Legal Institutions," Papers 2107.11314, arXiv.org.
    3. 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.
    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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