EBay (Nasdaq: EBAY) is the leading person-to-person and small-business auction community on the Internet, commanding an estimated 88% market share. The company's dominance of a lucrative, high margin, high growth, no-inventory business has resulted in a valuation for eBay that recently topped $18 billion. But is this only the beginning? Despite competitors bidding for market share, eBay's leadership has not flagged. Building on its dominance, the company is now addressing international markets as well as local domestic markets with personalized websites. eBay has also moved into auctioning rare items. With a worldwide market opportunity approaching $1 trillion, Fool Jeff Fischer believes that if the $18 billion eBay plays its cards well, it could become a $100 billion company before 2010. Given that the Fool will now issue at least four reports on eBay annually, 2010 is only about 39 reports (and a potential $82 billion in shareholder value) away. Do you care to bid on eBay's potential? (The initial report sent to all subscribers is 17 pages and includes 10-year performance estimates.)