Hmm... My first thought was that 151M call records is not a significant amount considering that we're talking about the population of the United States. Rough

Hmm... My first thought was that 151M call records is not a significant amount considering that we're talking about the population of the United States. Rough calculations based on some very round numbers is that this would account for between .019 and .033 percent of the adult US population. (~150M call records/year ~= 50-80,000 people, US Adult Population ~ 242,470,800) Extrapolated, that number is a little concerning. By my estimate, that means between 2 and 3 of every 10K people is under some sort of surveillance. But then again... apply that to say... San Francisco - population ~900K and you get between 180 and 270 people. Or NYC with 1.7M people and you get between 340 and 510 people.