http://www.beeminder.com/
BeeMinder (Sounds like Reminder) is really a service that helps you track data. From the site: "BeeMinder tracks your progress towards your goals."
In my trial, I set up a goal of one pound of weight loss per week until Christmas. Yes, I know that I am obese - but look - I'm making progress with Beeminder's help. Here is my current chart:
The "Yellow Brick Road" describes my goal with upper and lower controls. In this case, the lower control doesn't really come into play, but if I go over the top of the yellow brick road - then I've broken my commitment.
