Cyberdiets forum is a website for dieters
It has free diet profiles, recipes, and tips. You can have your own homepage and weekly plan.
They are great places to ask questions, maybe find a weight loss partner for support and to share your success stories.
Another good one is the Ediets bulletin boards.
This one also has free diet profiles, online diet plans, weight loss store which is full of Vitamins and supplements, DVD's, Books and CD's as well as Yoga and Pilates Training.
They also have meal delivery diet plans.