The portrait that Airbnb paints of its hosts is homeowners who either want to occasionally rent out unused rooms, or people who just happen to have amazing weekend homes that they want to share with random strangers. That may be true for many Airbnb hosts, but there’s also a growing concern about so-called “mega hosts” who are effectively running hotel operations, renting out dozens, hundreds, sometimes more than 1,000, properties at any given time. [More]