Facebook has released a new app that allows for semi-anonymous chatrooms. Called Rooms, it’s currently available for iOS, with an Android and iPad native port not far away. The decision to release an anonymous chat app is an unusual one for Facebook. Previously, they’ve deactivated the accounts of anyone with a name that’s even moderately unusual, and their strict stance on the use of real names has resulted in the creation of Ello, an ad-free social network which permits pseudonymous usage.