Paul Rappoport is Associate Professor of Economics at Temple University. He has over 25 years of experience in data analysis, modeling and statistical assessment, with a specialization in telecommunications demand analysis. He was responsible for the development of Bill Harvestingä, a national database of actual communications bills, a small business panel - which focuses on telecommunications and energy - and a large consumer national telecommunication database. His current research work is focused on modeling Internet demand, network externalities and competitive analysis. He received his Ph.D. from The Ohio State University in 1974.