agreed. it has done some near miraculous things for people. the closest thing i could compare it to is an ultra intense massage in one pinpoint area coupled with joint movement. In other words, dude presses his thumb, elbow or whatever on a particular area, until it's entirely buried in your skin and muscle, and then starts rotating/stretching/bending your knee, shoulder, arm or whatever it is that is the problem.
the pain is damn near indescribable. expect to scream, cry and/or vomit bitch.