The online auction powerhouse sells one car every minute on eBay Motors; at StubHub, which eBay acquired in February, you can buy tickets baseball games, Broadway shows, concerts and other events. And the charity auctions at eBay Giving Works have helped buyers and sellers raise $100 million for more than 10,000 nonprofit organizations since the program started in November 2003. Also, check out the eBay Wiki to read about —or chime in on — all things eBay.