Bad. I think that each city, town, neighborhood, whatever should be able to make whatever rules they want on the subject. I like the inexpensive stays and potential side income from AirB&B, but living in an area with them can really suck because you get can get stuck with a different shitty neighbor every few nights. not to mention the fact that that additional income can contribute to the inflation of the real-estate in an area. I think any sweeping regulation on the issue would be heavy-handed, the determination of if it should be permitted should be determined individually in each area, by the people who live in that area.