We examine the effect of competition on second-degree price discrimination in display advertising in Yellow Pages directories. Our main empirical finding is that while competition is associated with lower prices, the association is not proportional along the range of product offerings. Instead,...

This paper measures the technological significance of voluntary standard setting organizations (SSOs) by examining citations to patents disclosed in the standard setting process. We find that SSO patents are cited far more frequently than a set of control patents, and that SSO patents receive...

We analyze a dynamic model in which Þrms and consumers choose to adopt one of two technologies or delay their adoption. Adoption allows agents to trade with other adopters of the same technology. We show that there is an inefficient equlibrium in which Þrms differentiate across standards and...