Firms introducing network technologies (whose benefits depend on who installs the technology) need to understand which user characteristics confer the greatest network benefits on other potential adopters. To examine which adopter characteristics matter, I use the introduction of a...

This paper investigates how internet users' perception of control over their personal information affects how likely they are to click on online advertising. The paper uses data from a randomized field experiment that examined the relative effectiveness of personalizing ad copy using posted...

This paper investigates how the destabilizing of a social network may increase the scope of network externalities, using data on sales of a video-calling system made to an investment bank's employees and subsequent usage by these customers. The terrorist attacks of 2001 led potential customers...

This paper analyzes the role of heterogeneity and forward-lookingexpectations in the diffusion of network technologies. Using a detaileddataset on the adoption of a new videoconferencing technology within afirm, we estimate a structural model of technology adoption andcommunications choice. We...

Each search term put into a search engine produces a separate set ofresults. Correspondingly, each of the sets of ads displayed alongsidethe results is priced using a separate auction. We investigate how bidsfor these context-based ads depends on the difficulty of making a match.This contrasts...