At DoD’s National Defense University (NDU) I have started a research program called Social Software for Security, or S3. These technologies have many potential benefits to our military forces and associated civilians, including: (1) internal government information sharing, (2) creating and nurturing relationships with non-governmental entities, and (3) empowering people in post-disaster or post-war situations.
The general plan for S3 is four stages. One, inventory available technologies and their positive and negative attributes. Two, catalog case studies of applications to security affairs. Three, describe unique risks associated with social technologies. Four, recommend courses of action.
If this interests you, and particularly if you are using such technology within the government, please get in touch! I would like to form a social network for us, around this topic.