Online platforms, such as Yelp and TripAdvisor, have facilitated ubiquitous and convenient access to a large number of online reviews about almost any product/service. Hence, it is imperative to understand what makes a review helpful for the consumers to make a decision about the adoption of the focal product/service. Drawing on Berlo's sender-message-channel-receiver model, the authors identify factors affecting online review helpfulness from the extant literature. Such understanding is critical to the review platforms and organizations to mitigate review helpfulness.
