Co-founders, YouTube (GOOG)
Ages: 29 (Hurley), 28 (Chen)
Last year the dot-com duo sold the online community where users share videos -- now serving over 100 million videos per day -- to Google for $1.65 billion. But they're no sellouts: YouTube's stayed just as controversial, drawing a billion-dollar lawsuit from Viacom even as it seeks new ways to split advertising revenues with video creators. Ages: 29 (Hurley), 28 (Chen)
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