Lets look at a few things: Do you use a credit card? Do you use a discount card? Do you go on the internet? Ever get unsolicited mail? Magazines subscriptions? We are tracked in so many ways that this one is pretty unobtrusive and meaningless. On the other hand, what are the odds the NSA are going want to look into your boring lives? We really don't have that kind of time. I would much rather have them listen to my phones calls (which isn't what we are doing) then cram those damn pre-approved credit card offers in my mail box every day. Not to mention the endless coupon pamphlets. Now that's a crime.