The S.E.L.F.I.E. camera and twitter are going to be introduced in patch 6.1 for World of Warcraft: Warlords of Draenor. The camera allows players to take a selfie on themselves wherever they may be. Heck invite a few players with you so you can post it to Twitter afterwards. All these features are available currently in the public test realm.
GameFragger can only imagine the ridiculous selfies that are going to be posted to Twitter. The S.E.L.F.I.E. camera will be a level 100 quest title "Field Photography." So pull out the camera and take a pic and enjoy yourselves!