Confirmed: Yahoo Buys Advertising Platform 5to1 For $28 Million

Yahoo has just announced that it will be acquiring advertising platform 5to1 for $28 million. We originally broke the news of the acquisition last week.

5to1 first launched at TechCrunch50 in September 2009, and raised around $13 million in various rounds of funding. The startup is an online advertising alliance consisting of major media publishers. Built on a proprietary publisher-controlled platform, 5to1 offers advertisers premium inventory at mass scale.

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