For an electronic communication environment, an apparatus for refining addresses in a group messaging environment is disclosed. The throttle valve is rotatably assembled in a bore wall part of the throttle body while the throttle valve is rotated by a predetermined rotation angle \u03b8 between 45\xb0 and 135\xb0 with respect to a rotation angle 0\xb0 corresponding to its full close position. User interaction data may be obtained, for example, as users interact with one or more software applications.