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John Battelle's Federated Media Publishing online ad network has received $4.5 million in a Series B round of funding. Repeat investors include the Omidyar Network. Amounts raised in a previous round have not been disclosed.
Other recent developments for ad networks include the funding of OpenAds, the launching of AdPerks, and FeedBurner's self-publishing ads system. Facebook , Magnify, Meebo and YouTube are some social networks that are in the process of tweaking and improving their own ad network options as well.
[via PE Hub]