I don't this is working working now. When I tried to use the above 'banner' link, it took me to amazon, but once i did some search, the 'cookie' (which links to PPMD) goes away.
I recently got a mail from Amazon, where they have moved to a new way to donate to your favorite charity.
You can click on "Supporting" and then "Change your charity" to choose PPMD research.
Then whenever you shop amazon through smile.amazon.com, they donate 0.5% of your purchase to PPMD research.
Can webmaster of the ppmd please update this information in the Fundraise/"Otherways to help" section.