There are a lot of places to meet people! Can you tell us a little more about yourself so we can suggest some places to try?
There are threads related to your age (20's, 30's, etc.), how much wieght you have to lose (just a little, over 100, etc.), how you like to exercise (running, etc.), how you like to eat (weight watchers, south beach diet, calorie counting, etc.), and lots more.
Tell us more about you and we can give you some links to threads.
I hope you stick around!