CalorieKing
Collection of dietary resources including a searchable database of food nutritional information, recipes, and articles.
http://www.calorieking.com/
South Beach Diet 101
Offers a presentation of the low carb, low fat principles on which South Beach Diet is based, as well as a lot of recipes designed for this diet.
http://www.south-beach-diet-101.com/
Weight Loss & Obesity Resource Center
Features information on diet and weight loss, a newsletter, online tools, and a member forum.
http://www.weightlossobesity.com/