Since eBay became more than just an online garage sale, many retail industry observers have wondered just how important eBay is as a selling force. A new survey by ACNielsen International Research for eBay provides an answer: very important. The survey reports that 724,000 Americans derive their primary or secondary income from eBay, a group which eBay characterizes as “professional eBay sellers.” Another 1.5 million say they supplement their income by selling on eBay. About "About an eBay Business 724,000 Entrepreneurs"