AOL Inc. (NYSE: AOL) is set to buy, which helps businesses buy and sell ads for online video electronically, for $405 million. The price tag breaks down to about $322 million in cash and roughly $83 million in stock. develops software that serves targeted advertisements to online video users and provides a marketplace of ad buyers and sellers. Founded in 2007 and headquartered in San Mateo, Calif., had raised nearly $50 million from venture capital firms, including Bessemer Venture Partners, Gemini Israel Funds, Redpoint Ventures and Spark Capital.

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