Priceline founder Jay Walker is back, and this time he's focusing on business travel. His new firm, Flexible Travel Company, right now isn't much more than some people and a marketing website. But those people are experienced and that website is intriguing. It describes the company as "turning the way we buy business travel upside down."

Walker "has been working on the ideas behind his latest travel venture since he founded Priceline," the site explains. "Every business trip he took was a reminder that he had left a big travel problem unsolved – the high costs of business travel . . .

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