• A lack of user generated media — YouTube clips, in particular — featuring Japanese faces and real names. Many performers, despite virtuoso-level skills, wear masks or otherwise obscure faces in their video content.
• The predominance of anonymous sites like 2ch as the main corridors of internet culture.
• Blog writers, who have not established fame through other media, almost never reveal real names, even when the information and service provided is of professional quality and not explicitly personal. (More on this here.)