Simon Anderson is Commonwealth Professor of Economics at the University of Virginia. He has published on advertising, search and information, price dispersion, media economics, and industrial organization. Joel Waldfogel is Frederick R. Kappell Chair in Applied Economics. Previously the Ehrenkranz Family Professor of Business and Public Policy at the Wharton School, University of Pennsylvania, he has conducted empirical studies of price advertising, media markets, and issues related to digital products. A Professor at the Institute for International Economic Studies, David Stromberg is also a Research Affiliate in the Public Policy Program at the Center for Economic and Policy Research in Washington, DC. He has published on the influence exerted by media on public policy.