Web 2.0 No 154, 2009/2 - pagesPages 9 to 12PresentationBy Dominique CardonPages 15 to 50Negotiating Points of ViewBy Nicolas Auray, Martine Hurault-Plantet, Céline Poudat, Bernard JacqueminPages 51 to 89Participatory Vigilance: An Interpretation of the Governance of WikipediaBy Dominique Cardon, Julien LevrelPages 91 to 129Why Share My Vacation Photos with Strangers?By Jean-Samuel Beuscart, Dominique Cardon, Nicolas Pissard, Christophe PrieurPages 131 to 164Selection, Matching, and Modes of Commitment in Meeting SitesBy Johann ChauletPages 165 to 193Self-representation and digital identityBy Fanny Georges, translated by Liz Carey-LibbrechtPages 195 to 227Professional Wiki and Networked CooperationBy Laurence Caby-Guillet, Samy Guesmi, Alexandre MallardPages 231 to 246The Attention Industries: Moving beyond Opinion and LoyaltyBy Dominique BoullierPages 247 to 262Reviews