New York Times: Many months behind schedule, the Department of Defense on Friday issued a new policy that, on the surface, seems likely to expand access to popular social networking sites like YouTube, Facebook and Twitter by troops using military computers. ... The new policy, which can be found here, says that the default policy of the department will be to allow access to social networking sites from the military’s non-classified computer network, known by its acronym, NIPRNET (for Non-classified Internet Protocol Router Network.)