As the occasional host in SF, I do get extremely paranoid about guests, and only accept requests from guests who have had an account for more than a year, who have 100% positive reviews, and has at least 2 reviews in the last 6 months. Obviously I reject a lot of requests. Even then I did have one unfortunate incident involving a guest bringing home another guest that stole something even though I explicitly said "no guests."<p>My perspective from the host POV is that you really have to do your own vetting of guests beyond anything AirBnB will provide. AirBnB provides barebones proof of ID, but that's it.<p>Ultimately, I find AirBnB's business to be 100x "crazier" than other "sharing" companies like, say, Uber. At least with Uber there is a more regimented process for vetting and onboarding drivers. With AirBnB it is still a free-for-all on both sides.<p>At the end of the day, you're letting a total stranger into your house. Where you sleep and have all your things. It's a risk and everyone who uses AirBnB should be aware of it.