I just came across this research article on the web somewhere. The description says: "This article is a contribution to the debate on audience participation in online media with a twofold aim: (1) making conceptual sense of the phenomenon of participatory journalism in the framework of journalism research, and (2) determining the forms that it is taking in eight European countries and the United States."Exactly what I was looking for! Here's a link to the full research article:
http://www.informaworld.com/smpp/content~db=all~content=a902114337
http://www.informaworld.com/smpp/content~db=all~content=a902114337
