Product information websites have become ubiquitous in supporting B2C E-Commerce. This paper explores their impact on firm profitability, consumer surplus, and social welfare. Using an analytical model, we show that firms take advantage of such infomediaries and reduce their own information...

The digitization of commerce has caused fundamental changes in consumer information search and use. With an increasing number of consumers using search engines as an integral component of their online purchase process, online sponsored search markets, such as those provided by Google and Yahoo!,...

This paper develops and analyzes a model of competition between platforms in an industry with indirect network effects, with a specific focus on complementary product exclusivity. The objective is to understand the conditions under which complement exclusivity can be observed and analyze the...

Pay-for-performance (P4P) pricing schemes such as pay-per-click and pay-per-action have grown in popularity in Internet advertising. Meanwhile, the traditional pay-per-impression (PPI) scheme persists, and several advertising publishers have started to offer a hybrid mix of PPI and P4P schemes....