The Internet has been transformed in the past years from a system primarily oriented on information provision into a medium for communication and community-building. The notion of Web 2.0, social software, and social networking sites such as Facebook, Twitter and MySpace have emerged in this context. With such platforms comes the massive provision and storage of personal data that are systematically evaluated, marketed, and used for targeting users with advertising. In a world of global economic competition, economic crisis, and fear of terrorism after 9/11, both corporations and state...