In February 2011, the Department of Homeland Security announced that the agency planned to implement a program that would monitor media content, including social media data. The proposed initiatives would gather information from "online forums, blogs, public websites, and messages boards" and disseminate information to "federal, state, local, and foreign government and private sector partners." The program would be executed, in part, by individuals who established fictitious usernames and passwords to create covert social media profiles to spy on other users. The agency stated it would store personal information for up to five years.
http://epic.org/foia/epic-v-dhs-media-monitoring/
http://epic.org/foia/epic-v-dhs-media-monitoring/