I might donate money, but I don't stop eating. Sorry. And really, will my not eating for 2 days accomplish anything other than drop my blood sugar to the point where I'm passing out? Nope. Not solving world hunger. Here's an idea. Donate to a food bank, volunteer your time helping the needy where you live, get involved in your community. That WILL make a difference, a huge one.
I understand the idea behind it. You walk around telling people you gave up food or technology or something for 40 hours and ask them to donate money. However, there's a crap load of people who will give up something for 40 hours without donating anything themselves or getting others to donate money. It's a feel good thing.
Not this one, it's mostly to raise money for third world countries, where children do not have food medicine or education. People participate in this particular event to help those kids. Some people do fast to feel good, but this isn't the Famine's entire purpose