Ebay have teamed up with Missionfish (www.missionfish.org.uk), allowing buyers and sellers to donate proceeds from their auction to charity. In addition to giving a percentage of the winning bid to your designated charity, you can also set up Giftaid. I've just listed an item and noticed that a charity icon is added to the title. On searching through various listings, I could not find any other sellers that were donating to charity!!