Google, Bing and Yahoo. Somebody who's never seen a computer might think that's the cast of a 1930s knockabout comedy. But we know them as the three big players in the search engine marketplace.
It takes a brave company to set up in business against them, but that's what several intriguing startups are doing. The nature of the computing industry is one of giants regularly toppling. Remember Wang, DEC, or even Sun? So why not Google, Microsoft or Yahoo?

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