My wife and I are doing the whole "digital nomad" thing. I'm finding a few things with Airbnbs:
New AirBnbs are often a good deal. The host wants good reviews so they'll discount their price to attract folks.
New listings can also be a scam. Scammers copy photos from an amazing place, make a place that is enticing, and then you show up and it's fake. They're hoping you cancel so they still collect part of the money. ( Has happened to us. Airbnb gives you $50 for the trouble. )
You can verify the hosts of the real new listings because they sometimes have other listings that have reviews. Could also pull their social profiles?
AirBnb unfortunately doesn't have an API for this, nor do they have a search feature built in for doing it manually.
Why not send out weekly emails of new, good looking AirBnbs (or HomeAway and others) that are currently discounted.
I'd subscribe to that. Pro users get access a half hour earlier (i.e. Scott's Cheap Flights).
Could call it "NewBnb" (sounds like "new-bie") .