From what I have heard, those things are still very popular over in Europe. People have very small lawns and the thing doesn't weigh that much. It hangs on a wall, for crying out loud! /forums/images/graemlins/grin.gif
As to how they work, I've heard they give a nice cut. But likeyou said, how in the heck does the grass stand up to get cut??? /forums/images/graemlins/tongue.gif