In particular, you can’t rent an apartment more than 120 days a year. Many renters also can’t list their apartment on Airbnb unless the landlord is fine with it. Now, hosts need to display a registration number on the Airbnb listing. There are currently 65,000 homes on Airbnb in Paris. Only 11,000 apartments have been registered so far according to the AFP. So it seems like Paris wants to speed things up more than anything. While Airbnb is the elephant in the room, the city of Paris sent a letter to Airbnb, HomeAway, Paris Attitude, Sejourning and Windu. Get the full story at TechCrunch