eBay recently introduced eBay Giving Works, a way for eBay users to list items on behalf of nonprofit organizations.

eBay teamed up with MissionFish, a nonprofit service of the Points of Light Foundation, to offer sellers the ability to list items on eBay and donate part or all of the proceeds to their favorite nonprofits. Nonprofits will be able to raise funds by listing items as well.

Buyers can find charity listings by going to the main eBay Giving Works page.

http://pages.ebay.com/givingworks/faq.html