Does anyone know of a good weight loss/diet/exercise forum?

I am looking for a good group to join of people who are trying to lose weight who can hopefully help me lose weight too. I am looking for a place where I can share my daily food log as well as exercise log where people can critique my diet and help me do the best I can to stay on track. I am hoping that if I have to log it daily it will help me to stay better on track. I have heard that keeping a daily food log and exercise log helps you stay focused but I also want to put it online where other people can see it and chime in if they see anything that I am doing that might not be the best for my overall goals.