List of contributors. Editor's introduction. Evolution of the market for air-travel information (M. Doane, K. Hendricks, R.P. McAfee). Which industries use the internet? (C. Forman, A. Goldfarb, S. Greenstein). Valuing internet retailers: Amazon, Barnes and Noble (J.A. Chevalier, A. Goolsbee). The evolution of price dispersion in internet retail markets (X. Pan, B.T. Ratchford, V. Shankar). Online price dispersion within and between seven European countries (J. Rupert, J. Gatti, P. Kattuman). Price dispersion, product characteristics and firm's behaviors: Stylized facts from shopper.com (J. Chen, P. Scholten). What attracts a bidder to a particular internet auction (J. Livingston). An experimental market with network effects and one sponsored seller (S. Chakravarty). Intergenerational product compatibility and price competition (D. Chen). Dynamic pricing via fees in duopoly with varying usage levels (K. Griva, N. Vettas).