Stanford law school John m. olin program in law and economics Working Paper 283 May 2004 Confusing Success with Access "Correctly " Measuring Concentration of Ownership and Control in mass media and online services Bruce m. owen Stanford Institute for Economic Policy research(sIEPr) Stanford University This paper can be downloaded without charge from the Social Science Research Network Electronic Paper Collection http://ssrn.com/abstract=545302Stanford Law School John M. Olin Program in Law and Economics Working Paper 283 May 2004 Confusing Success with Access: “Correctly” Measuring Concentration of Ownership and Control in Mass Media and Online Services Bruce M. Owen Stanford Institute for Economic Policy Research (SIEPR) Stanford University This paper can be downloaded without charge from the Social Science Research Network Electronic Paper Collection: http://ssrn.com/abstract=545302