The NYSE has been under pressure to become more of an electronic-trading model and ditch its centuries-old floor auction model.

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ScoreBig sells tickets to games, concerts and plays using an auction model similar to EBay, Hotwire and Priceline.

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Zopa.com used the auction model in the United Kingdom, but in the United States where it launched in December, it works directly with credit unions and lets these unions set the interest rate and decide whether to fund.

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Hoffman helped build Priceline.com, the name-your-own-price travel site, part of tech holding company Walker Digital, and later headed up other Walker business units, including Priceline YardSale, which applied the auction model to selling everything from toys to refrigerators.

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Prosper.com employs an eBay or auction-style model and lets potential lenders both determine the interest rate and who gets funded in a several-week bidding process.

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"We came up with a computer-generated model, " says Robert McQuay of the North American Fur Auction, a tad coldly.

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Covisint started out as an online auction site for auto components, but evolved toward a far more useful business model: providing motorists with secure access to the internet through their car.

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The 1979 model from the recent sale is on screen mostly in driving scenes, according to the auction house Profiles In History, of Calabasas, Calif.

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