Introduction Editor's Note Peter R. Wurman i Feature Articles A Statistical Analysis of the Trading Agent Competition Pier Luca Lanzi and Alessandro Strada 1 Fair Exchange in E-commerce Indrajit Ray and Indrakshi Ray 9 Price Issues in Delivering E-Content on Demand Srinivasan Jagannathan and Kevin C. Almeroth 18 The Usability of Electronic Stores Based on the Organization of Information and Features Kah-Sing Chan 28 ISSN 1551-9031