Eli M. Noam is the Garrett Professor of Public Policy and Business Responsibility as well as a Professor of Finance and Economics at the Columbia Business School, and serves as Director of the Columbia Institute for Tele-Information. He also served for three years a Commissioner of Public Services for New York State and on the White House's President's IT Advisory Council. He has written over 400 articles in economics, legal, communications journals and is the author of Media Ownership and Concentration in America.