NEW YORK (AdAge.com) -- What's the future for media agencies in a 2.0 world where marketers communicate directly with their consumers? That was one of the issues Tim Hanlon addressed at the recent Advertising 2.0 conference. He's managing director of VivaKi, the year-old Publicis entity that's an investment arm and think tank for new digital marketing strategies. It's re-envisioning what a media agency is.