“You can move around the map by clicking on the coloured spheres: clicking on the smallest spheres takes you deeper into an argument, clicking on the largest sphere takes you back up.”

The Independent put up a nice interactive click-through map with information and arguments about the crisis of newspaper and the digital age raised by Clay Shirky, Richard Posner, Jeff Jarvis, Roy Greenslade, Howard Kurtz, Gavin O’Reilly etc. (via)