Greenwald drops another Snowden scoop on NSA internet surveillance program XKeyscore

At the Guardian, Glenn Greenwald writes: "A top secret National Security Agency program allows analysts to search with no prior authorization through vast databases containing emails, online chats and the browsing histories of millions of individuals, according to documents provided by whistleblower Edward Snowden. The NSA boasts in training materials that the program, called XKeyscore, is its 'widest-reaching' system for developing intelligence from the internet." []