We extend the theory of tax incidence under Cournot-Nash oligopolistic competition to study the effects of an ad valorem sales tax on Web services (so-called Web Tax) that are provided free of charge to users, and produce advertising space sold to businesses. Ads are more valuable to advertisers...

In this study the dynamics of online product ratings is modeled based on the data for 59 items from 20 product categories. We account not only for the context dependence of subsequent reviews on previously posted reviews, but also for product type (search product or experience product). We...

Like many other media services, internet search services provide two-sided platforms that coordinate interactions between media consumers and media advertisers. As with other media services, especially newspapers, the possibility has been raised that positive feedback between the consumer and...