SparkPeople
SparkPeople is a goal-based weight loss program. Rather than just sticking to nutrition, SparkPeople has a large component of fitness, motivation, and goal-setting. SparkPeople began in 2001, and has been growing ever since. At one point, they offered (arguably) the best value weight loss program online ($9.95 per year). However, the pricing was substantially increased in late 2004.SparkPeople Diet Plan Basics
The macro-nutrient recommendations place SparkPeople as a moderate fat, high carb, low protein diet - similar the guidelines of the USDA Food Pyramid. A typical diet recommendation will come out at 15% protein, 55% carbohydrate, and 30% fats.Calorie recommendations are based on whether you select "moderate" or "aggressive" weight loss. Selecting aggressive will put the calorie recommendations on the low side - too low for an active person.
Outline
SparkPeople is a great web site, with an amazing array of easy-to-use tools. Many people have had success with SparkPeople as it takes more of a holistic approach than just prescribing a diet plan.However - the caloric and macro-nutrient recommendations may not suit everyone, and if you intend to build or tone muscle, the combination of low-calories and low protein may not be appropriate. A higher-carb diet is more appropriate for endurance athletes who are burning a lot of energy.
Comparisons
SparkPeople is very similar in style to a number of other online weight loss programs - such as eDiets, DietWatch, or CyberDiets. Each program has differences in the kind of tools offered. Pricing, however is similar - users are charged monthly. It is also worth examining the cancellation and refund policies, as they can differ quite significantly.NOTE: SparkPeople has now removed subscription fees and has become advertiser-supported.