New media thinker Jay Rosen has been using the work of press scholar Daniel C. Hallin to explain how the Internet has eroded journalists' traditional power to define what issues are legitimate for proper debate. Hallin wrote that journalists tend to place public issues into three categories: a sphere of consensus, a sphere of legitimate controversy and a sphere of deviance. In a post on his blog, Press Think, Rosen argued that the press has done a lousy, unthinking job of deciding what goes into each category, and that through the Internet American citizens might assume this role for themselves…….