There's quite a few other clauses that you'll be breaching, so it might pay to have a read: https://www.airbnb.co.nz/terms
There's quite a few other clauses that you'll be breaching, so it might pay to have a read: https://www.airbnb.co.nz/terms
Just be aware that if people find out what you're doing, it probably won't be looked at very fondly - legally or morally.
Just because some folks might violate the terms of their {lease, rental agreement} does not mean ALL of them do. Your actions would hurt the honest hosts, as well as those in violation of their rental terms.
Don't be a schmuck. Seriously. You are not the moral police for those renters.
DISCLAIMER: I am an Airbnb host. I violate no rental terms, as I own my home.
But you're now suggesting that this injustice to landlords justifies harvesting Airbnb's user's personal information and then selling it? That's morally and legally questionable any way you look at it.