No one's claiming it has any practical use case, this is really just a toy. Though, one use case might be to have a 3D environment where in-game menus are made

No one's claiming it has any practical use case, this is really just a toy. Though, one use case might be to have a 3D environment where in-game menus are made with the DOM. Maybe in a virtual reality thing, or a rotating cube interface: http://ux.stackexchange.com/questions/11229/is-this-rotating-cube-interface-user-friendly http://ux.stackexchange.com/questions/11229/is-this-rotating...