Did you (Airbnb) do any research before deciding to build an iPhone app? Or was it primarily motivated by "cool" factor? (both are valid in my opinion)
I've had around 20 people stay at my place through airbnb and I think one person had an iPhone. At least in NY, many people visit from overseas where iPhones are not as prominent.
OTOH, Managing bookings on my iPhone is gonna be sweet.