Kevin Ham leans forward, sits up tall, closes his eyes, and begins to type -- into the air. He's seated along the rear wall of a packed ballroom in Las Vegas's Venetian Hotel. Up front, an auctioneer is running through a list of Internet domain names, building excitement the same way he might if vintage cars were on the block.

As names come up that interest Ham, he occasionally air-types. It's the ultimate gut check. Is the name one that people might enter directly into their Web browser, bypassing the search engine box entirely, as Ham wants? Is it better in plural or singular form? If it's a typo, is it a mistake a lot of people would make? Or does the name, like a stunning beachfront property, just feel like a winner?

When Ham wants a domain, he leans over and quietly instructs an associate to bid on his behalf. He likes wedding names, so his guy lifts the white paddle and snags Weddingcatering.com for $10,000. Greeting.com is not nearly as good as the plural Greetings.com, but Ham grabs it anyway, for $350,000.

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