Service seems not to be working any more which is a shame
However there is another one at
PayPal Donation Meter -
http://www.PayPalDonationMeter.com
Its $4.95 but that allows you to use the script on upto 3 different websites and you can have the script posted multiple times on the site to collect donations for multiple different reasons, it even allows you to display the name of each donor and what they donated for the last x numbr of donors
Pretty cool
Hope this helps