NPR story on bike theft

http://www.npr.org/2012/02/06/146474749/seeking-revenge-in-underworld-of-vanished-bikes

In order to avoid losing your bike, Symmes recommends keeping a record of the bike serial number so that you can track it if it is stolen, locking the seat, and putting locking hex nuts on the front wheels. He also stresses the importance of having a good lock. But he warns that even high-quality locks won't stop the most ambitious thieves: "If they can't steal your whole bike, they'll steal the wheels. If they can't steal the wheels, they take the seat."