Apple's new MacBook Air, which CEO Steve Jobs introduced yesterday during his keynote speech at Macworld Expo, is set to fuel market share gains for the company alongside rising hardware sales driven by new iTunes content, according to one analyst. "While we estimate that ultraportables count for 15 percent of total portable computer sales, we beli...

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	www.macnn.com/articles/08/01/16/analyst.on.apple.keynote/