This paper reviews existing studies investigating online communication on products and services, also known as, electronic word-of-mouth (eWOM). The first half of the paper summaries what is known about eWOM in the literature. Existing studies largely relate to the marketing field and are...

This study empirically investigates how two types of airport charges (per-passenger and per-flight) differentially affect airfares, service quality (flight frequency), and welfare. A structural model endogenizing airfares and flight frequency is estimated with data on Japanese domestic routes...

This paper proposes a new method for estimating random coefficients logit models using aggregate data. The method is applicable for models with discrete-type heterogeneity in consumer tastes when additional data on the total sales for each consumer type are available. The type-level data do not...