Decided yesterday in the 7th Circuit: Users can tell the difference between The Dark Knight Rises fake "clean slate" program — which can delete every reference to you on every computer, everywhere — and a real program which restores default settings to shared computers.
Moving can be a horror, but it's also a wonderful opportunity to get rid of all your crap. The boxed stuff that goes from apartment to garage to storage to house? Dump it. The furniture you don't even like? Sell it. Start fresh, live clean.