Apple vs. Google vs. Facebook vs. Amazon - WSJ.com: " . . . Meanwhile, all four companies see search as a big opportunity for retaining and profiting off customers. While Google's paradigm of typing queries in a search box has prevailed for years, now its rivals want to undercut the Web-search giant through mobile search on smartphones and other devices, and a slew of search services that allow recommendations from friends. Apple's foray is Siri, a voice-activated service that answers queries about topics like the weather or sports scores from the iPhone or iPad homescreen. Next year, the company will continue its hunt for new data to power the service, making it useful for a broader number of queries. And at a conference in September, Facebook Chief Executive Mark Zuckerberg riffed on the myriad ways that friends could provide useful answers. He said the company would expand its search capabilities in the future. . . ."
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