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...

The unprecedented easiness of exchanging information among consumers on the internet could add another dimension to the firms' competition against each other. In this paper, we introduce consumers' learning from each other about the degree of product differentiation into a Hotelling duopoly...