So, I've been more seriously working on losing some weight, and I'm down one notch on my belt. Woohoo.
Something I've been thinking about doing is getting people to sponsor my weight loss. The way it would work is I'd publish a set of weight loss goals and get people to pledge money to that goal if I reach it by a specific date. All of the money raised would be donated to the American Heart Association, or some other deserving health-related charity.
Anyone heard of a similar idea?
What do you all think?

I think this is a great idea, but how would you document your weight loss? Through photos?