Hydra Network http://i.hizliresim.com/62ozL0.pngHydra Group is an online advertising network operated by Hydra Group LLC. It specializes in "cost per action" or "cost-per-acquisition" (CPA) pricing models.The network distributes targeted campaigns on behalf of advertisers through its affiliate network of website, paid search, incentive, lead generation, subscriber email, and co-registration publishers.