of enforcing taxes in a digital world, determining filing thresholds, dealing with online marketplaces and facilitators …, and taxing the consumption of digital services from two-sided platforms. With respect to digital services, we discuss … whether consumption taxes should be imposed on both monetized platforms and non-monetized platforms such as social media, and …

competitiveness of advertising markets and the ability of platforms to profile consumers. We show that, even when most consumers multi … markets. Finally, we study how the intermediary responds to policies designed to enhance transparency or consumer privacy, and …

that create important challenges for competition policy. We show that these features have been key determinants of the … by the UK competition authorities as well as evidence on the evolution of the market after the transactions were approved …

) transparency or if consumers’ privacy preference differs across countries. Unilateral data regulation by each country addresses the …

made data protection and privacy a major policy concern. When surfing the web, consumers leave digital traces that can be … activity. The extent of shadow profiling Facebook may engage in is similar on privacy-sensitive domains and across user …

online platforms. We analyze tracker-specific web browsing data to show how the prediction quality of consumer profiles …

policy requiring list prices to be public). Otherwise, more protective privacy regulations have ambiguous effects on consumer …

regulatory tools – a data minimization principle and a price cap – that can be used by data protection agencies and competition …

), to be levied on the revenue of large digital platforms from advertising, online intermediation, and/or the transmission … platforms from particular locations. We provide stylized illustrations of how platform rent can be assigned to specific …