Online ad network Collective Media has secured $20 million in Series B funding led by Accel Partners and iNovia Capital. Collective Media offers publishers an ad network management platform to create their own branded, vertical ad networks. The company raised an undisclosed amount in Series A funding, led by Greycroft Partners and iNovia Capital, in October 2007.

Launched in 2005, the company provides technology products that let publishers use advance audience targeting, manage ad networks, and access analytics. Collective Media says it will utilize the new funds to grow its network, develop new technology, expand internationally and explore acquisitions. Last year, Collective purchased contextual ad targeting company Personifi for an undisclosed amount (though there were reports that they paid “eight figures” for the Personifi).