Back when I was trying to lose weight from my first pregnancy, I was on sparkspeople alot. They have a partner website called babyfit. I go on there and input food and stuff to check calories, and read articles, its pretty interesting. It helps me stay on track. I find if i'm not reading about nutrition and exercise things either in books, magazines, or online, I get less motivated. Anyways, just wanted to mention it in case you guys hadn't been there yet.
www.babyfit.com