This would probably be most helpful to a person who is just beginning on a diet or has no clue what to eat to aid weightloss, but I think it's a great start.
The American Heart Association has also launched "My Fat Translator", which shows the amount of fat (even a breakdown of good and bad fats) that is needed in one's diet on a daily basis.
There is also a partner program called "Choose to Move" that is tracking the fitness of seven different women. Each woman has a blog with their weight, BMI and their fitness goals.
Lastly, Start! Walking at Work Day is April 25th. Trust me, I have already started. I try to walk before work and during lunch. The only thing I really hate about my job is that I sit all the time. To occupy myself on my walks, I listen to podcasts of my favorite radio shows, and about four different food podcasts and a wine podcast. Here are some of my favorites: The Splendid Table, KCRW's Good Food, NPR Food, Three Wine Guys, and so happy the boys from Gastrologica are back!