This paper examines the impact of the Digital Markets Act (DMA) on consumer behavior, focusing on changes in Google's search result presentation in the European Union (EU). Specifically, it investigates the effects of Google's removal of clickable maps in search results, a modification...

This online appendix to "Insulated Platform Competition" includes proofs and details of our applications.The paper to which these Appendices apply is available at the following URL: "http://ssrn.com/abstract=1694317" http://ssrn.com/abstract=1694317

We consider the strategic use of information by an online platform to both guide consumer search through its product recommendations and influence sellers' targeting and advertising decisions. The model provides a unified view of personalized product recommendation and targeted advertising on...

Following the Internet's widespread adoption, much economic work has studied ‘online platforms': firms that mainly interact with consumers in cyberspace. This article surveys such work, focusing on the ways in which traditional economic models have been adapted to incorporate novel aspects...

This report presents the results from a new Eurobarometer survey about the use of online platforms within the EU, focusing especially on search engines, online social networks and online marketplaces. It also explores a range of issues relating to the use of these online platforms, including...