I just read an article that immediately made me think of 3FC!
It basically says that people who take part in social networking groups that focus on weight loss actually are more succesful in losing weight. According to the study, the people who interacted the most in these networks actually lost more weight.
Article
I bet the same thing is true here! I think I would attribute it to the amount of support that everyone gives here. It's truly special. So keep being awesome 3FC!