Online anonymity has posed a significant threat on online reputation mechanisms and online identity management. How to improve the reliability and effectiveness of online reputation has thus become an important question of theoretical and practical interest. We examine a reputation market in an...

We develop a system for grid computing where the price of computing tasks is determined by an audited market-exchange. We show a method to provide a variable certificate, called \witness," of program execution with the following property: If two different agents running the same program on the...

We study reputations with imperfect audit and a reputation market. The main result shows the existence of a separating equilibrium in the reputation market, which contrasts with Tadelis [Tadelis, S., 2002, The market for reputations as an incentive mechanism, Journal of Political Economy 110(4),...

Online communities provide a social sphere for people to share information and knowledge. While information sharing is becoming a ubiquitous online phenomenon, how to ensure information quality or induce quality content, however, remains a challenge due to the anonymity of commentators. This...

We study reputations with imperfect audit and a reputation market. The main result shows the existence of a separating equilibrium in the reputation market, which contrasts with Tadelis [Tadelis, S., 2002, The market for reputations as an incentive mechanism, Journal of Political Economy 110(4),...

Online communities provide a social sphere for people to share information and knowledge. While information sharing is becoming a ubiquitous online phenomenon, how to ensure information quality or induce quality content, however, remains a challenge due to the anonymity of commentators. This...

Online reputation trading is a new phenomenon facilitated by the prosperity of e-commerce and social networks. Whether reputations will be reliable when people can purchase rather than build their reputations is a natural concern and also a challenge to online marketplaces. In the present study,...