All of these fad diets have one thing in common:
Short term changes that are intended to bring about fast weight loss, but don't teach you sustainable eating patterns.
What I like about Sparkpeople is it teaches you to eat a healthy, balanced diet that revolves around moderation... not crash diets, restrictive rules, nor elimination of entire food groups.
This is the article that changed how I viewed weight loss:
Stop dieting and start living! www.sparkpeople.com/resource/motivation_ar