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The PC megamaker quietly obtained trademark protection last month for the term "cloud computing." U.S. law says that as soon as Dell begins using the term, it owns the trademark and can force other companies to stop using it. But realistically, would you try to sell "cloud computing" to Wal-mart shoppers? Dell's move will probably backfire by forcing other companies to come up with a more appealing term for the technology. Everybody wins!