We conduct a field experiment at a nonprofit organization's online store to study how demand changes when consumers' purchases generate revenue for a charitable cause. Consumers respond strongly when their purchases generate small donations by an anonymous outside group, but responses are...

This paper deals with competition in communications markets between an incumbent and an entrant. We analyze the effect of bundling strategy by a firm who enters an incumbent market. This market dimension has profound implications on the sustainability of collusion in an infinitely repeated game...

This article assesses the unilateral effects on prices of a merger in the Portuguese mobile telephony market. We use aggregate quarterly data from 1999 to 2005 and a nested logit model to estimate the price elasticities of demand and the marginal costs of subscription of mobile telephony. Given...

In Portugal, the telecommunications incumbent offers broadband access to the Internet, both through digital subscriber line and cable modem. In this article, we estimate the impact on broadband access to the Internet of the structural separation of these two businesses. We use a panel of...

This paper uses a unique individual transactions data set to investigate the effects of internet purchase on the prices paid for airline tickets. The analysis also investigates the effects of changes in the percentage of online transactions on both online and offline prices and on price...

Proof of work (POW) is a set of cryptographic mechanisms which increase the cost of initiating a connection. Currently recipients bear as much or more cost per connection as initiators. The design goal of POW is to reverse the economics of connection initiation on the Internet. In the case of...

The telecommunications sector is one of the most innovative, high-growth, capitalintensive yet volatile sector of the economy. This research addresses critical concerns of how, when, and why an enterprise or a service provider should undertake new investments. The study investigates the power of...

In this paper, we study the dynamics of the market for Database Management Systems (DBMS), which is commonly assumed to possess network effects and where there is still some viable competition in our study period, 2000-2004. Specifically, we make use of a unique and detailed dataset on several...

We develop a general model of decentralized exchange. Our model allows for any number of traders and traded assets, and any form of market decentralization, including trading environments determined by an arbitrary network structure. We study how the equilibrium allocation and liquidity depend...

Although many streams of literature have recognized that firms with broader scope often underperform those with greater focus, relatively little research has examined the mechanisms that might account for these diseconomies of scope. One potential mechanism is that uncertainty shocks |events or...