I've just joined MFP and like the simplicity of entering the food items, it's much easier than any other food diary I've tried before. But I think the idea of having friends to use makes it really useful too, to be motivated seeing what they have done.
I'm happy to friend anyone, but would really appreciate some friends near the same age as me, 41. As I said, I'll cheer on anyone in their 20s or 60s as well.
If you want to add me, my online name there is Showmm.