I was just observing my ads, and noticed the one to the left, "Save a Shirt, Buy a Life." I thought it sounded cool, and discovered another way to help in Haiti. The organizations sponsoring the ad is donating meals in Haiti for 17 cents each. They also have some very cool t-shirts. The shirts have a message on the front for a specific cause, from human trafficking to homelessness. They even have a shirt for Haiti earthquake relief. The product description shows what you're buying for others in addition to the t-shirt. I think it's quite clever.
If the ad isn't shown, go here. If it is, please just use the link from the sidebar.