So they can Point and zap with a little more discretion. They may want to zap the conspiracy theorist, but not the sheep. Or maybe zap the arabs but not the jews. Or the elderly but not the able-bodied. Or the naturopaths but not the drugged that support big pharma. Ad infinitum.

And maybe, just maybe, the nanobots will be reporting back who you are, where you are, what you say, what sites you surf. Think of them as little, tiny rfid tags. And surf around to find out what those tags can do today.