The aim of this paper is to study the empirical phenomenon of rating bubbles, i.e. clustering on extremely positive values in e-commerce platforms and rating web sites. By means of a field experiment that exogenously manipulates prior ratings for a hotel in an important Italian tourism...

We review the economics of superstars, originally developed for stars in traditional media, and discuss whether they are applicable for the (allegedly) novel phenomenon of stars in social media (influencer, micro-celebrities). Moreover, we analyse potentially new factors for creating social...

Two-sided matching platforms can control and optimize over many aspects of the search for partners. To understand how matching platforms should be designed, we introduce a dynamic two-sided search model with strategic agents who must bear a cost to discover their value for each potential...

With the rising number and importance of projects in diff erent business and other areas, the need to support persons in charge of or working on projects is becoming more and more topical. Accurate and timely data about project plans, actual progress and costs, proposed solutions etc. are of...

Spanish abstract. El cómputo de alto rendimiento es una necesidad para el desarrollo de investigaciones con grandes volúmenes de datos. La creciente demanda de este tipo de resultados ha impulsado a varios centros de investigación a poner en funcionamiento recursos de cómputo de alto...

Internet usage is growing rapidly among the world. Furthermore, Internet usage is widely accepted among EU countries' citizens. In this paper intend is to research to what extent Internet sales by individuals is influenced by the barriers people perceive to buying/ordering over the Internet,...

Traditionally, the scholarly journal market operates so that research institutions are charged high prices and the wider public is often excluded altogether, while authors can usually publish for free and commercial publishers enjoy high profits.  Two forms of open access regulation can...

We analyze the economic effects of a developer’s connectedness in the electronic game industry. Knowledge spillovers between developers are likely to be of special relevance in this knowledge-intensive and regionally concentrated industry. We calculate social network measures for a...

The aim of the paper is to discuss the new sequential and cumulative approaches of location process based on non-market interactions. We distinguish between the role played by network externalities and the one played by information externalities in order to distinguish locational clusters and...

Search frictions can explain why the "law of one price" fails in retail markets and why even firms selling commodity products have pricing power. In online commerce, physical search costs are low, yet price dispersion is common. We use browsing data from eBay to estimate a model of consumer...