Rating systems measuring quality of products and services (i.e., the state of the world) are widely used to solve the asymmetric information problem in markets. Decision makers typically make binary decisions such as buy/hold/sell based on aggregated individuals' opinions presented in the form...

This paper uses data collected from eBay's website to identify why buyers fail to leave (negative) feedback in online markets. Empirical results con¯rm that the fear of retaliation may be an important motivation for buyers not to leave (negative) feedback, while the time and effort cost of...

Reputation systems that rely on feedback from traders are important institutions for helping sustain trust in markets, while feedback information is usually considered a public good. We apply both theoretical models and experiments to study how raters' feedback behavior responds to different...