Dosh Dosh, an interesting site on social marketing and social networking, lists 48 top social news websites such as Reddit and Digg.
The site also has a primer about social news websites and points you to a list of 380 social news sites.
As you might know, the Harnisch Foundation under the direction of Ruth Ann Harnisch gave us a substantial gift to start the Center for for Sustainable Journalism at Kennesaw State University. We are up and running. Keep abreast of what is happening at SustainableJournalism.org 
Leonard Witt is the Robert D. Fowler Distinguished Chair in Communication at Kennesaw State University and the chief blogger of PJNet. His academic interests include public and citizen journalism and how to get citizens' voices heard. He has spent most of his professional career as an award-winning journalist.