-> Having 75 days to rent your home is a perfectly reasonable restriction.

Just out of curiosity, and because I can't find the answer, what is the number 75 based on? Is there something in the data about that number, wherein those who rent out up to and including 75 days are the "reasonable" people just renting out their place while they're gone on a long holiday? 75 just seems sort of random and arbitrary, to me at least. Is that the threshold for when people renting out their place become the "long-termers"?

Edit: Third party and not from Airbnb, but this place seems to aggregate some data. Gonna go play now. http://insideairbnb.com/get-the-data.html