Jay Rosen's NewAssignment.net and Wired News just launched AssignmentZero, "an attempt to bring journalists together with people in the public who can help cover a story."
I think this is a really wonderful project that takes the concept of citizen journalism to the next level by creating a platform for professionals and amateurs to collaborate on one story. Check it out and sign up to be a part of the project. Their first project-- assignment zero-- is about crowdsourcing and the larger practice it's part of: peer production on the new information commons.
(I wrote their copyright and privacy policy so please let me know if you have any feedback on that.)