Pretty sure Airbnb owns the trademark on "Airbnb" so you can't use it this way. You might be able to get away with comparing your service to Airbnb in the conte

Pretty sure Airbnb owns the trademark on "Airbnb" so you can't use it this way. You might be able to get away with comparing your service to Airbnb in the context of a "testimonial" or something, but almost certainly not in a tag line.