The CIA is Watching You Tweet

…The CIA maintains a social-media tracking center operated out of an nondescript building in a Virginia industrial park. The intelligence analysts at the agency’s Open Source Center, who other agents refer to as “vengeful librarians,” are tasked with sifting through millions of tweets, Facebook messages, online chat logs, and other public data on the World Wide Web to glean insights into the collective moods of regions or groups abroad.

[Source: The Atlantic]