First Seattle, then London, now the Big Apple -- Amazon's delivery lockers are starting to pop up all over. As we've explained before, the lockers are basically giant, automated PO boxes, designated exclusively for Amazon purchases. If you choose to add a locker location to your address book (go check your account settings to see if the option is available to you yet), your package will be crammed into one of these kiosks and you'll be given a code to unlock a partic