People selling stolen goods on craigslist almost always use a bait and switch scheme. They will list one item, and when they get a response, they'll say, "oh I

People selling stolen goods on craigslist almost always use a bait and switch scheme. They will list one item, and when they get a response, they'll say, "oh I sold that bike, but I also have this very similar one for sale..." but I guess you could programatically account for that if you were truly so inclined.