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Attention, Please

How one man's company caught Yahoo's eye.

This story appears in the April 2008 issue of Entrepreneur. Subscribe »

Here's a biography guaranteed to make you feel like a sloth. Gurbaksh Chahal dropped out of school at 16 to found the online ad network ClickAgents. Two years later, he sold it to ValueClick for $40 million in stock. Once his noncompete ran out, he started BlueLithium, a global online ad network that focuses on behavioral targeting. Last year, Yahoo acquired that business, which then had 175 employees and nine offices, for $300 million.

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