Material they have been gathering. according to new york times they are using gps data, bank codes, facebook. pamela brown is here with the latest developments. >> important information here, kate. according to new york times, this social mapping of certain u.s. citizens who officials believe may have a foreign intelligence link has been going on since november of 2010. as one privacy expert put it. it's the equivalent of tailing a suspect. the nsa isn't only tracking metadata from your phone calls and e-mail logs, it is using that information to create a sophisticated web of social connection...