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Apple's iPhone may have set the standard for a new generation of smartphones, but plenty of would-be competitors abound. Here are four top picks for the PDA-obsessed. More
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Has the American consumer become roadkill? With GDP shrinking and consumer confidence cratering, even niche retailers like Cabela's, a hugely successful chain of hunting and outdoor-sports superstores, are feeling the pain. More
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Solar smarts
Solar smarts
Berkeley startup Sungevity aims to do for the solar business what Dell did for personal computers: digitize the entire enterprise to cut costs and create a mass market. Enter your address on Sungevity's website, and satellite-imaging software zooms in on your home, calculates the roof's dimensions, selects appropriately sized solar arrays, and shows what they will look like installed -- while computing your return on investment. Once the order is placed, an off-the-shelf prepackaged solar array is shipped to the customer's door, and an installation crew is dispatched. "This changes the game," says
Sungevity co-founder Danny Kennedy.
-- Todd Woody

NEXT: Wasteful thinking
Last updated April 21 2008: 9:03 AM ET
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