Blogs No 138, 2006/4 - pagesPages 9 to 12PresentationBy Dominique Cardon, Valérie Jeanne Perrier, Florence Le Cam, Nicolas PélissierPages 15 to 71Self-Production as a Relational TechniqueBy Dominique Cardon, Hélène Delaunay-TéterelPages 73 to 107Bloggers and their BlogsBy Matthieu PaldacciPages 109 to 138Instrumented Youth SociabilityBy Cédric FluckigerPages 139 to 158United States: News Blogs Revive the Question of Journalistic IdentityBy Florence Le CamPages 159 to 184The Blogosphere: A Fifth Power?By Marcia Rogerio Grilo, Nicolas PélissierPages 185 to 218Wikipedia: A Public Participation Media DeviceBy Julien LevrelPages 243 to 268Revisiting the Story of the "Dog Poop Girl"By Samuel BordreuilPages 269 to 272Love Networks on the InternetBy Eva IllouzPages 273 to 275ReviewsPages 279 to 286Critical Book Review