This issue of "Rhumb Lines" discusses guidelines for "safe and responsible personal use of social media"--specifically privacy and operations security concerns related to the use of social media sites in a military environment. Aggregation of information is one of the primary concerns addressed. From the document: "Since social media has been authorized under DTM 09-026, it has given Navy personnel the ability to instantly communicate with service members, families and other stakeholders. In turn, those people can now share information with their social groups online. While this interconnectivity has obvious and significant benefits to our deployed forces, it does come with risks. Information not intended for public release can be quickly distributed, and adversaries can collect information online to piece together a more comprehensive picture of someone's life, a ship's routine or a command's mission. To mitigate these risks, it is critical that we educate our personnel and families on how to safely us social media."
Navy Office of Information: http://www.navy.mil/
Rhumb Lines (September 16, 2010)