There could be a market for it. Or a system that facilitates it. A friend of mine once visited Hong Kong, and crashed on the couch of a friend of his. That f

There could be a market for it. Or a system that facilitates it. A friend of mine once visited Hong Kong, and crashed on the couch of a friend of his. That friend said, "I'm going to be out of town, but here's your phone, here are the friends of mine that you'll be hanging out with while you're here." I thought that was very cool.