Success Secrets of eBay Millionaires Find out how 10 entrepreneurs tapped into the power of eBay and made millions.

Editor's note: Check out these entrepreneurs' top secrets in our eBay Millionaires slideshow.

David Wirtenberg, 28
Outrageous Auctions (eBay User ID: outrageousauctions)
New York City
Projected 2006 Sales: $8 million to $10 million
Description: Engagement rings, wedding bands and other jewelry

Turning Talk Into Sales: David Wirtenberg loves to talk. "I could talk your ear off," he says. "I love what I do. I'm a very passionate person." His ability to make sales, and his prior experience in sales for Bear Stearns and Auto Data Processing, helped him build his business from scratch in 2003. His father-in-law became his inspiration and behind-the-scenes mentor. "He said, 'Let's see if we can sell jewelry on the internet,'" Wirtenberg recalls. "I went to 47th Street in Manhattan. I knocked on every door. I didn't know anything about diamonds at the time. I was looking for suppliers, for an education, anything." He ended up buying a couple of diamond rings, and he immediately sold them for a profit on eBay. "I thought, 'This could be something.'"