Any of Airbnb's competitors are going to use this to their advantage. Rightfully so too... I didn't even know about Roomorama until this story. The biggest part of the story though was thrown in at the end: The harrowing story of the Airbnb user EJ prompted Ms. En Teo to reach out to her competitors in order to set a precedent for sharing information about sketchy users, so if she gets a report about misbehavior she…
Banks do this today with their info sharing through ChexSystems. I've seen banks that will report their current account holders for the most trivial violations. The result being that the account holder can't open an account anywhere else.