A common complaint against people who rent out their homes on Airbnb and similar sites is that some hosts aren’t just renting out a spare room or letting strangers use their house when it’s empty for a weekend or two, but that some hosts are effectively hoteliers and landlords who don’t have any connection to the places they let out. In an effort to crack down on this practice, the city of San Francisco is about to require that all Airbnb hosts register with the city, and that they do so in person. [More]