All major federal agencies now using Twitter and YouTube

Every major federal agency is now using Twitter and YouTube and 23 of the 24 major agencies are on Facebook.

The Nuclear Regulatory Agency -- the only major agency reported as not using any of the three major social networking sites in a June 2011 report by the Government Accountability Office -- joined Twitter in August 2011 and launched a YouTube page a month later, spokeswoman Holly Harrington said.