The authors test opposing theories on how urban locations influenced the diffusion of Internet technology. They find evidence that, controlling for industry, participation in the Internet is more likely in rural areas than in urban areas. Nevertheless, talk of the dissolution of cities is...

This article emphasises that a key to understanding the (net) benefits of the Internet is to remember that all online activity has an offline context. People live their lives offline. Therefore, the fall in communication costs and the fall in distribution costs associated with the diffusion of...

Drawing on the literature on online advertising, I argue that the fundamental economic difference between online and offline advertising is a substantial reduction in the cost of targeting. This cost reduction informs what I view as the main themes in the online advertising literature:...

We review research on revenue models used by online firms who offer digital goods. Such goods are non-rival, have near zero marginal cost of production and distribution, low marginal cost of consumer search, and low transaction costs. Additionally, firms can easily observe and measure consumer...

This paper examines the causes of market concentration in advertising-supported online markets such as sports, news, and email. In particular, it is the first paper to explore the relationship between concentration and product differentiation, economies of scale, market size, advertising,...

This paper develops a new method of identifying why current product unavailability has an effect on future brand choices. If the impact is solely due to changing preferences, then all competitors of the unavailable item gain proportionally to their share; if, however, there is lock-in, then the...