It's interesting that on HN I see near universal support for the freedom to smoke pot in one's home, or to live with a same-sex partner, or replace a lawn with a rock garden, or to have our communications remain private.
But when it comes to letting someone crash on your couch in exchange for a few bucks, suddenly there are calls for a full-scale invasion of privacy and limitation of what one can do in their own home, in order to protect one's neighbors from... what exactly?
Obviously property rights have reasonable limitations, but is Airbnb really such a case? If you have a neighbor that is hosting a bad guest, then surely the bad behavior is the problem (and probably already illegal).