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Published online by Cambridge University Press: 02 February 2015
This essay is based on the keynote address given by the author at the Summer School on the Analysis of Political and Managerial Networks, University of Tilburg, September 23, 2005, a lecture at the East China University of Science and Technology Workshop on Social Network and Relationship Management, June 20, 2006, and a presentation at the Macro Organization Seminar at Northwestern University, November 4, 2006. I would like to thank Patrick Kenis and Joerg Raab for their comments on the Tilburg presentation. I also draw heavily on a review article that I co-authored on networks and organizations (Brass et al., 2004) and Kilduff and Tsai's (2003) useful book, Social Networks and Organizations. Finally, I would like to thank Dan Brass, Yanjie Bian, Wenpin Tsai and Anne Tsui who provided very useful comments on an earlier draft and made numerous suggestions which I have tried to incorporate into this final draft.