1. It was founded by Pierre Omidyar, who became a billionaire at age 31 when eBay offered its IPO in 1998.
2. Originally, Omidyar wanted the domain echobay.com, but when he found out that domain was already in use he simply changed it to eBay.
4. Not only does eBay own both StubHub and PayPal, it also owns many other companies such as Shopping.com and Half.com.
6. The entire town of Bridgeville, Calif., was sold not once but twice on the site.
In 2002 for $700,000 and then again in 2006 for $1.25 million.