And no, the answer is not because you're blogging here, though I'm sure all of us have wondered as much recently.

An official disclaimer, before I begin.  I do not hold a security clearance.  I have never held a security clearance.  To my knowledge, no one has ever disclosed classified information at any level to me.  Having said that, I have been around the technological side of the law enforcement and intelligence communities long enough to have a picture of the technology behind intelligence and investigative analysis and the laws that back it up.

Want to know why you might be under surveillance?  Make the jump.