DOD warns against the dark side of social networking -- Washington Technology

In an earlier era, “loose lips sink ships” was the military’s warning not to let even small details about military movements and operations slip in casual conversation. In contrast, social media Web sites today thrive on loose lips, making it even tougher to maintain operational security.

The problem is not so much people twittering away secrets as letting slip many smaller pieces of information that an adversary can piece together...