Jörg Gutsche University of Mannheim   Department of Economics L7, 3-5 Mannheim, 68131 Germany   joerg.gutsche@vwl.uni-mannheim.de   http://www.vwl.uni-mannheim.de/conrad   Biographical Sketch: 1994-2000: Master of Business Engineering (University of Karlsruhe); 1999,2000: (Visiting) Associate with The Boston Consulting Group (Dusseldorf); 2000 to date: Research Assistant in Economics at the University of Mannheim   Primary Research Focus: Economics of open source software   JEL Areas: D0 : Microeconomics: General H4 : Publicly Provided Goods: General