I have created a web charity fund raiser site over at http://purchase4charity.org/
How it works is that for every purchase made at Amazon by first clicking through on the link at purchase4charity.org will add 5% of the revenue to the fund that will be donated to charity by the end of each month.
So instead of buying that polo for $100 at amazon.com you can still buy it for $100 at amazon.com only that $5 of that $100 will be donated to charity!
So what are you waiting for?