What do Amazon's product reviews, eBay's feedback score system, Slashdot's Karma System, and Xbox Live's Achievements have in common? They're all examples of su

Experts discuss the benefits and risks of online reputation systems. In making decisions, we often seek advice. Online, we check Amazon recommendations, eBay ve

How insights from the social sciences, including social psychology and economics, can improve the design of online communities. Online communities are among the

Trustworthiness technologies and systems for service-oriented environments are re-shaping the world of e-business. By building trust relationships and establish