We study users' response to sponsored-search advertising using data from Microsoft's Live AdCenter distributed in the "Beyond Search" initiative. We estimate a structural model of utility maximizing users, which quantifies "user experience" based on their "revealed preferences," and predicts...

This paper studies mergers in two-sided markets by estimating a structural supply-and-demand model using data from the 1996-2006 merger wave in U.S. radio. It makes two main contributions. First, it identifies the conflicting incentives of merged firms to exercise market power on both sides of...

This paper develops a way to estimate fixed-cost efficiencies from mergers. The estimates might be used to assess the total welfare impact of retrospective and counterfactual mergers. The procedure uses a structural model in which companies play a dynamic game with endogenous mergers and...