- Ademar Aguiar, FEUP, Universidade do Porto, Portugal
- Luca de Alfaro, University of California at Santa Cruz, USA
- Panagiota Alevizou, London School of Economics and Political Science, UK
- Mark Bernstein, Eastgate Systems, USA
- Robert Biddle, Carleton University, Canada
- Amy Bruckman, Georgia Institute of Technology, USA (Program Chair)
- Thomas N. Burg, BlogTalk, Socialware, MindMeister, Austria
- Ed H. Chi, PARC, USA
- Ulrike Cress, Knowledge Media Research Center, Tuebingen, Germany
- Kevin Crowston, Syracuse University, USA
- Chris Dent, Peermore Limited, UK
- Alain Desilets, National Research Council of Canada, Canada
- Andrea Forte, Georgia Institute of Technology, USA (Associate Program Chair)
- Frank Fuchs-Kittowski, Fraunhofer ISST, Germany
- Andrea D. Gorbatai, Harvard Business School, Harvard University, USA
- Susan C. Herring, Indiana University, USA
- Brian Ingerson, Socialtext, USA
- Benjamin Mako Hill, Massachusetts Institute of Technology, USA
- Aniket Kittur, Carnegie Mellon University, USA
- Marc Laporte, TikiWiki CMS/Groupware, Canada
- Sky Marsen, Macquarie University, Australia
- David W. McDonald, University of Washington, USA
- Paulo Merson, Software Engineering Institute, USA
- David Millard, University of Southampton, UK
- Stuart Moulthrop, University of Baltimore, USA
- Pattarawan Prasarnphanich, Sasin Graduate Institute of Business Administration, Thailand
- Joseph Reagle, New York University, USA
- Camille Roth, CNRS, France
- Frank Shipman, Texas A&M University, USA
- Dario Taraborelli, University of Surrey, UK
- Fernanda B. Viegas, IBM Research, USA