Rob Walker:

Even if Spies won the object, created by a young artist named Caleb Larsen, his ownership would be tentative: the technical innards of “A Tool to Deceive and Slaughter” carried a program that would relist the thing on eBay every week, forever. Indeed, the terms and conditions for submitting a bid clearly stipulated that the device must be connected to the Internet, constantly trying to resell itself at a higher price to someone else.

Very neat, if this is still on display I might have to go take a gander.