Well Lusche like anything else its going to work best as part of a well balanced program of healthy diet, and exercise.
But even a 15 min workout on the Wii balance board doing ski jumping or downhill skiing will make a difference.
Its amazing sometimes how much work doing perfect balance is. With the Salom Skiing, your constantly changing balance from left to right, plus leaning forward to speed up, back to slow down. Your whole body is into the act.
Plus its a lot more fun than just doing the same amount of time on a treadmill.
I don't use it to lose weight, at 173 lbs and 5'8" I'm happy with where I'm at.
But it does help keep me trim while being low impact. Easy on ankles, knees, etc.
The other thing it does a very good job at is keeping track of stuff like weight loss or gain, how often you use it, etc.
Biggest problem here is just getting the wife to use it.