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Ashton Kutcher
Ashton Kutcher
Actor; Co-founder, Katalyst Media

Ashton Kutcher's Katalyst Media aims to cross content from multiple platforms, but the model-turned-actor's most publicized foray into the tech world has been via Twitter: Kutcher beat CNN in the race to 1 million followers on Twitter, and today about 3.3 million people follow his Twitter handle, "aplusk."

NEXT: Bob Iger
Last updated September 01 2009: 11:30 AM ET
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