I've tried it and I think it makes alot of sense--IF, you do it in a sensible way. You can load a plate a foot high with junky caloric food or you can focus on quality nutritious food and get very different results. The minutiae of WHAT to eat is left up to you. There are several things about NO S that appeal to me. One, you form a habit of when is the correct time to eat - if it's not a meal time when you can sit down with a plate of food, then it is not time to eat. This also fits in nicely with family time because I think it's important for a family to sit down to a meal. One of the hypotheses about the french paradox is that the french are healthier than americans not because of what they eat, but because of the way
that they eat--they relax and enjoy their meals and each other's company.
Second, the guy who created NO S, Reinhard Engels was just looking for a way to solve his own weight problem. It worked for him so he created a web site . Now he has a book out but the website was first and is completely free.
Lastly, I like the fact that you get weekends off and can eat what you want. The funny thing is once you have done it for a while you don't want to go hog wild.