Director's foreword / Neal Benezra
Introduction / Rudolf Frieling
A genealogy of participatory art / Boris Groys
Toward participation in art / Rudolf Frieling
Politics, participation, and meaning in the age of mass media / Robert Atkins
Art after Web 2.0 / Lev Manovich
Plates / texts by Rudolf Frieling, Melissa Pellico, and Tanya Zimbardo.