
1:18pm: Like Google and Groupon, Facebook's letter expressed a defiant idealism that -- eventually -- must confront the realities of business. More
CNNMoney looks at the people who make up the biggest investors in Facebook. Play
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The three-year-old San Francisco startup has an innovative service -- that works. Users around the world are signing up in droves. So why are cities like Washington D.C. trying to kill it?

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Team Coco's video bits can be hit or miss. The one about Apple's iNett was a miss.
Apple's mobile phone shipments nearly doubled in 2011, overtaking LG and ZTE.