Miami Beach, Florida, which already imposes stiff fines for illegal short-term rentals, is now requiring online platforms to list specific business license information on their sites. "We discovered Airbnb and the other platforms are allowing the rentals to happen in zoning districts that are patently illegal," Aleksandr Boksner, chief deputy city attorney, told CNBC on Thursday. The new law took effect on Sept. 22, but the city has given short-term rental platforms about 30 days to institute changes that would allow a host or property owner to enter the required information. Get the full story at CNBC