Summary:

The “shadowy” world of selling and using online audience data has been in discussion a lot lately, and investors have been taking notice. Th…

Dartboard; off-target
photo: Corbis / Chat Roberts

The “shadowy” world of selling and using online audience data has been in discussion a lot lately, and investors have been taking notice. This morning, eXelate, which operates an open marketplace for audience targeting data, said it closed a $15 million second round of funding to help expand its technology even further.

Since the Israel-based eXelate raised its first $4 million round three years ago, the company has captured a lot of attention from publishers as well as advertisers for its data gathering.

Earlier this year, eXelate struck a deal with Nielsen to provide data covering 150 million internet users. That information was to be combined with Nielsen

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