User blog comment:Semanticdrifter/Digital Protest Against the FISA Improvements Act/@comment-5122856-20140207131108

According to a report by The Wall Street Journal, sources close to the U.S. National Security Agency (NSA) warn about a potential "blind spot" in their phone record (aka "telephony metadata") scheme that allows them to track the call records and locations of Americans on a daily basis. http://www.dailytech.com/Source+Dont+Worry+NSA+Spies+on+99+Percent+of+Americans+Locations+Call+Records/article31761.htm