improvement in a book's reviews leads to an increase in relative sales at that site, and 3) the impact of 1-star reviews is … greater than the impact of 5-star reviews. The results suggest that new forms of customer communication on the Internet have …

sites. We argue that our methodology of comparing the sales and reviews of a given book across Internet retailers allows us …, albeit somewhat expensive component of Internet retail strategies. In this paper, we characterize reviewer behavior at two … popular Internet sites and examine the effect of consumer reviews on firms' sales. We use publicly available data from the two …