The US Department of Defense will now allow social networking and Web 2.0 social tools access within it’s Non-Classified Internet Protocol Router Network (NIPRNET). A statement “Responsible and Effective Use of Internet-based Capabilities” (DTM 09-026) was released on February 25th to formally allow social networking use within the non-classified network–unifying the policy across military branches for social network usage. This memorandum will also provide unified authority for public affairs communication for the military within social networking websites and tools.

http://www.ironpaper.com/current/2010/02/pentagon-allows-social-media-within-non-classified-network/