advertiser support—and these characteristics also influence outcomes in television mar-
kets. Chapter 2 of this volume covers the theory of two-sided markets in more detail. The
implications of net neutrality for the delivery of online video are also covered in
Chapter 10 of this volume. I discuss the economic issues at the heart of recent (mostly
American) media mergers, complementing Foros, Kind, and Sorgard’s largely European
focus (Chapter 6 , this volume). Wilbur discusses recent developments in mass media,
including digitization and screen proliferation, two topics that are directly impacting tele-
vision markets (Chapter 5, this volume). Chapters 14 and 15 summarize the theory and
measurement of media bias. Early empirical applications were ...