Amazon unveils futuristic plan: Delivery by drone
cbsnews.com
cbsnews.com
First they came for my ability to hang out with my thang out...
Of course the risk due to shenanigans would be pretty high, so you would have to have some way of only revealing location information to trusted sending parties, rather than it being used for general mail.
edit - is inspired slightly by Bill Hicks' idea of 'smart-fruit' in his Iraq war rant http://www.youtube.com/watch?v=u4CQ_1GWn4w