An Economic Response to Unsolicited Communication

Theodore Loder 1 , 1 , Marshall Van Alstyne 2 , 2  and Rick Wash 3 , 3
  • 1 University of Michigan, tloder@umich.edu
  • 2 Boston University & MIT, marshall@mit.edu
  • 3 University of Michigan, rwash@umich.edu

Abstract

If communication involves some transactions cost to both sender and recipient, what policy ensures that correct messages -- those with positive social surplus –- get sent? Filters block messages that harm recipients but benefit senders by more than transactions costs. Taxes can block positive value messages, and allow harmful messages through. In contrast, we propose an ``Attention Bond,'' allowing recipients to define a price that senders must risk to deliver the initial message.The underlying problem is first-contact information asymmetry with negative externalities. Uninformed senders waste recipient attention through message pollution. Requiring attention bonds creates an attention market, effectively applying the Coase Theorem to price this scarce resource. In this market, screening mechanisms shift the burden of message classification from recipients to senders, who know message content. Price signals can also facilitate decentralized two-sided matching. In certain limited cases, this leads to greater welfare than use of even ``perfect'' filters.

    • This supplement is the mathematical appendix.
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The B.E. Journal of Economic Analysis & Policy (BEJEAP) is an international forum for scholarship that employs microeconomics to analyze issues in business, consumer behavior and public policy. Topics include the interaction of firms, the functioning of markets, the effects of domestic and international policy and the design of organizations and institutions.

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