Friends on MFP can see your status posts, when you post exercise and when you complete your food diary for the day. They are mostly there for encouragement. It's kind of like a facebook wall with people who don't get annoyed that all you talk about is food/exercise.
So I work in school food service and I think it's going to be hard to track everything I have to sample... So if you see that I've eaten 5 different roll samples like I just did, don't think I'm a pig.
I added everyone that requested me. Pay no attention to my eating this week, I have been on vacation and not really paying attention to what I am eating. But, I have been hiking all over water parks, so that has off-set a little of it.