Secrets: the currency of spies around the world. The rise of social media, hash-tags, forums, blogs and online news sites has revealed a new kind of secret — those hiding in plain sight. The CIA calls all this information "open source" material, and it's changing the way America's top spy agency does business.

NPR recently got a rare behind-the-scenes look at the CIA's Open Source Center. It operates on the down-low, even though they deal with public material. We aren't allowed to tell you where the Open Source Center is. All we can say is that it's housed in an unmarked and unremarkable office building just off a nondescript, busy street.
http://www.npr.org/2012/01/22/145587...he-private-eye