The difference between a hotel and a home is that while a hotel may be trashed occasionally by the drunk rockstar, there is nothing sentimental in the hotel room. Screening is not going to stop someone pathological from unleashing wanton destruction. Even ordinary renting out houses usually require some kind of bond to be placed to deter and filter out riff raffs. I wonder if AirBnB would ever do this because it increases the transaction costs dramatically. On the other hand, it is a nice cash "float".