[pstuart]

But Airbnb, as a service, should at least filter/advise for knowingly stupid things like renting out for such an extended period.

[chimeracoder]

If they're going to that effort, then why can't they filter for knowingly illegal things, like short-term rentals in cities in which this practice is illegal?

I don't see them doing either one anytime soon, since it presents a major PR/deniability problem.

[pstuart]

They're pretty much knowingly illegal as a business model, but that doesn't mean they can't protect their own users from simple abuses.