Despite the turmoil caused by Yahoo!'s decision to cut out demand-side platforms and retargeters, some digital media buying firms are on board, says Zachary Rodgers. Publicis' VivaKi, WPP's Media Innovation Group and Omnicom's Accuen are among the agencies that will benefit from consolidated buying power. "Agencies and the holding companies are critically important customers for us," said Yahoo!'s Seth Dallaire.