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Despite big-name backers like Intel and Sprint investing billions of dollars, WiMax still isn't available in the U.S. Perhaps that's a good thing. According to an Australian company that has actually rolled out the technology, it doesn't work. Buzz Broadband says WiMax "may not work," the tech has "failed miserably" and is "mired in opportunistic hype." Last September, Intel executive Sean Maloney said of his company's investment in WiMax, "Now we have to prove it was worth it." Good luck, Sean.