I use it for several vital things; to fix some annoying little FS problems like premature battery drain and control acceleration, to set graduated visibility limits, and most importantly to manage my multiple controller options. Mine's set up to automatically disable my stick and use my yoke if I load a yoke-controlled plane, and to enable my stick and disable my yoke if I load a stick-controlled plane. There are about a hundred other useful things you can do with it -- this is only scratching the surface.