So several local realty companies have been using the gimmick that if you buy a house from them, and can't sell your old one, they'll buy it from you.
This afternoon, on my way to a meeting, I passed a house that was obviously abandoned. Some windows broken, a front door hanging loose, graffiti, etc. It was obviously being used as a crackhouse, or homeless shelter, or teenage drinking hangout, or all of the above.
And in front of this wreck was a big sign from a realtor: "If you buy this house, I'll take your old one off your hands!"