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Google is giving developers direct access to its search database, bypassing its Web site and allowing them to design their own ways to use the valuable technology. Amazon has allowed similar access to its inventory database, releasing free developer kits that have enabled others to produce faster searches of "light" versions of the company's catalog, as well as other experiments. Yahoo and eBay have also begun to give developers access to their services, though neither company has made the program available for general use.