NY has ruled that you cannot use services such as airbnb to rent out rooms/houses/etc. You have to go thru the formal hotel/landlord way (which can be very costly). Interest how these services are springing up lately and folks are using them to try and supplement income, and get shot down by government.
http://news.cnet.com/8301-1023_3-57585377-93/ny-official-airbnb-stay-illegal-host-fined-$2400/