I can't help but be a bit amused when people go off worrying about databases. Your credit report has tons of information about you, including your current and previous addresses. Your voter registration makes it easy to find you. Your tax returns contain detailed information about your finances addresses, and employment. Your driver's license or ID card tells them where to find you. If you own a house, that's a matter of public record. If you've ever been in trouble with the law, that is too. I could list a dozen other ways the government already has information on you, but the point is made- if they are after you they can find you. So our little FAA registration is of no consequence. It's there for those rare times when someone gets stupid with a model plane so the police can find them, not unlike the license plate you have to buy for your car, which the government has a database for as well.