I think it could be useful if you haven't done a lot of weight loss programs/diets before. The people I know who've been successful with it generally didn't have a lot of weight loss experience and seemed to appreciate the 'you can eat anything approach'. I just retried it thinking maybe it had changed since I last did it (when they were called out for suggesting calorie counts that were drastically low). I quit after 2 days - I find the tone of the articles and the simplified (color coded) food logging just too patronizing to me. I got frustrated seeing healthy higher cal foods (almonds) marked as 'red' same as unhealthy high calorie foods (potato chips), but I'm used to tracking carbs/fats/protein. Under the covers their food tracking is really just calorie counting/rewarding low calorie density. That being said you can eat anything so it should work with any restrictions. And quitting after 2 days of the trial was easy (again, they got into trouble a few years ago making it difficult to cancel the sub)
~ Dawn
Our little monkey (4/2011) & his early holiday present 12/12