Calling all citizen journalists: Jay Rosen, NYU journalism professor and media blogger, may have an assignment for you. His NewAssignment.net, an experimental project partially funded by Craigslist founder Craig Newmark, aims to use both media pros and amateurs to develop a new, collaborative form of investigative journalism. Have an idea for an investigation? Rosen is looking for suggestions. See also PBS.org’s Mark Glaser and other examples of collaborative civic journalism initiatives, such as the Sunlight Foundation’s “Exposing Earmarks” project.