I have Fast abs, I have to say, it works. I have been using it for a month now, I have a Visable 6 pack. I did not have a Gut previously, but I didn't have a 6pack either.
Now for the bad news, the batteries need to be replaced once a week. (I use it for 1 hour a day, on full power). Also, you must use that Gel, or it will sting like a mother. And at first, dont use full power. Use on a low setting, then move up. Finally its tough to concentrate while using it, so dont expect your Counterstrick game to be crisp while wearing the belt.
Oh also, on a side not, I have also been working out a lot lately. I don't do more than 30-50 situps a day though. BUT, I did the same workouts before, and I never had results like this.