You create your account and then if you're on a webpage for something you want to buy you add to the givingpal wishlist and then if you buy it they donate to your chosen charity. No gayesque charities yet. I wonder if I could get Project Transitions to create an account. It's got the Amazon hookup, and the ebay and the buy.com too.
Here's the sauce to where you can read more about it and see a vuh vuh video of how it works.