This paper studies Stackelberg price competition in a multi-sided market. The second-mover can engage in divide-and-conquer strategies, which involve cross-subsidies between sides. The paper recovers bounds on profits, and refines the results with a selection criteria whereby consumers resolve...

We analyze situations in which an expert is biased toward some decision but cares also about his reputation in the market for experts. The information the expert reveals decreases as his bias moves toward stronger preference for the status quo. We show that it is optimal to publicly disclose...

This chapter provides a roadmap to the burgeoning literature on two-sided markets with a specific focus on BtoB market places. On-line intermediation involves two-sided network effects between buyers and sellers, and the implications for optimal BtoB platforms’ tariffs are discussed. The...

We characterize the unique equilibrium in which high ability sellers always announce the quality of their items truthfully, in a repeated game model of experienced good markets with adverse selection on a seller's propensity to supply good quality items. In this equilibrium a seller's value...

Studying the strategic interaction between litigants, lawyers and judges, we analyze the value of the quality of legal representation and how public information over quality affects the outcome of the judicial process. Judges have reputational concerns and the quality of lawyers is reflected in...

This article summarizes, in a non technical fashion, the main contributions of Jean-Jacques Laffont and Jean Tirole to the analysis of regulation, with a particular emphasis on their practical implications. We show how their idea of using accounting measures of production costs allows improving...

We show that sellers may earn reputation for their \ability" to deliver high quality goods on average by honestly announcing the realised quality of items for sale every period. As the expected revenue stream from continuing with honest communication increases with their ability, high ability...

[fre] Cet article présente des éléments d'analyse dérivés de la théorie de l'organisation industrielle qui éclairent le développement récent des activités de commerce électronique sur Internet. [eng] E-commerce: some elements of industrial organisation. . This article presents some...

[eng] The paper studies the optimal contract offered by a buyer to a producer, under asymétrie information on both the marginal cost and the fixed cost. The model illustrates the results obtained when generalizing the adverse selection Principal-Agent model by relaxing the assumptions on...