America through the N.S.A.’s Prism - New Yorker

“They quite literally can watch your ideas form as you type,” an unnamed intelligence officer told Barton Gellman and Laura Poitras of the Washington Post. “They” are the National Security Agency, and the Post report reveals that an N.S.A. program called Prism has, for the past six years, been “tapping directly into the central servers of nine leading U.S. Internet companies, extracting audio, video, photographs, e-mails, documents and connection logs that enable analysts to track a person’s movements and contacts over time." - Through the N.S.A.’s PRISM - Amy Davidson
Why Metadata Matters - Jane Mayer