Many new web-based services are introduced as free services. Depending on the seller's business model, some remain free in the long run, while others switch to pay mode at some point in time. I characterize the relation between buyers and a new service seller when the former are uncertain about...

In this paper we provide a thorough characterization of the asset return implied by a simple general equilibrium production economy with convex investment adjustment costs. When households have Epstein-Zin preferences, there exist plausible parameter values such that the model generates...