#9. Fatsecret.com

Losing weight is a lot easier when you have support from friends. Visit Fatsecret.com to connect with others who are trying to shed pounds, and to read up on popular diets like South Beach, Weight Watchers or Atkins. You can also keep an online journal about eating and exercise, swap recipes and make friends with other dieters. The site is entirely free but paid features may be added in the future.