Manuel Castells is University Professor and the Wallis Annenberg Chair of Communication Technology and Society at the University of Southern California. He is also Professor Emeritus of Sociology and Planning, University of California, Berkeley, where he taught for 24 years. He is a Fellow of the American Academy of Political and Social Science, of the Academia Europaea, of the Spanish Royal Academy of Economics, and of the British Academy. His main books include the trilogy The Information Age: Economy, Society, and Culture (Blackwell, 1996-2003) and Communication Power (OUP, 2009). He was a founding member of the board of the European Research Council and is a member of the Governing Board of the European Institute of Innovation and Technology. João Caraça obtained a D. Phil. in Nuclear Physics at the University of Oxford and the Agregação in Physics at the Lisbon Faculty of Sciences. He is Director of the Science Department of the Calouste Gulbenkian Foundation, Lisbon and also Full Professor of Science and Technology Policy at the Instituto Superior de Economia e Gestão of the Universidade Técnica de Lisboa. He is member of the Governing Board of the European Institute of Innovation and Technology - EIT. He also integrates the Steering Group of the European Forum on Philanthropy and Research Funding and is President of the Advisory Board of the Portuguese Business Association for Innovation - COTEC. He was Science Adviser of the President of the Portuguese Republic (1996-2006), has published over 150 scientific papers, and co-authored Limits to Competition (1995), co-edited O Futuro Tecnológico (1999) and collaborated in Le Printemps du Politique (2007). Gustavo Cardoso is Professor of Media and Society at IUL - Lisbon University Institute. His areas of interest are the cultures of the network society, the transformations of the notions of property, distribution and production of cultural goods, and the role of online social networking. Between 1996 and 2006 he was advisor on Information Society and telecommunications policies to the Presidency of the Portuguese Republic and in 2008 was chosen by the World Economic Forum as a Young Global Leader. His international cooperation in European research networks led him to work with IN3 (Internet Interdisciplinary Institute) in Barcelona, WIP (World Internet Project) at USC Annenberg, COST A20 "The Impact of the Internet in Mass Media" and COST 298 "Broadband Society." During the last five years he has been the Director of OberCom media observatory in Lisbon and is deputy chairman of the board of LUSA, the Portuguese global news agency.