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...

This paper examines how manager and firm characteristics relate to entrydecisions in US local telephone markets. To do so, it develops astructural econometric model that allows managers to be heterogeneous intheir ability to correctly conjecture competitor behavior. The modeladapts Camerer, Ho,...

This paper investigates the dynamic relation between callers' socialties and their wireless phone service consumption. We construct a largepair-level panel dataset with information on the number of each pair'scommon contacts, calling activities, prices, and each caller'scharacteristics over a...