Mobile telecommunication operators routinely charge subscribers lower prices for calls on their own network than for calls to other networks (on-net discounts). Studies on tariff-mediated network effects suggest this is due to large operators using on-net discounts to damage smaller rivals....

Peer influence through word-of-mouth (WOM) plays an important role in many information systems but identification of causal effects is challenging. We identify causal WOM effects in the empirical setting of game adoption in a social network for gamers by exploiting differences in individuals'...

Online copyright enforcement, in the form of either direct action against the supply- side (via website shutdowns) or the demand-side (via individual lawsuits against users), has not been very effective in reducing piracy. Regulators have therefore put forward the so called “follow the money"...

In this paper, we study the effects of a self-regulatory effort, orchestrated by the European Commission, that aims to reduce advertising revenues for publishers of copyright infringing content. Historical data lets us follow how the third-party advertising and tracking services associated with...

Taking down copyright-infringing websites is a way to reduce consumption of pirated media content and increase licensed consumption. We analyze the consequences of the shutdown of the most popular German video streaming website - kino.to - in June 2011. Using individual-level clickstream data,...

We analyze the economic effects of a developer’s connectedness in the electronic gameindustry. Knowledge spillovers between developers should be of special relevance in this knowledgebasedindustry. We calculate measures for a developer’s connectedness to other developers atmultiple points in...

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 developer's...