In Forrester's 19-criteria evaluation of emerging customer engagement agencies (CEAs), we found that only OgilvyOne Worldwide has made a significant-enough shift in this segment of its business to be considered a Leader. Two clusters of Strong Performers, grouped loosely by legacy business models, have also emerged: Ansira, Epsilon, Havas Worldwide Digital, Precision Dialogue, Rapp, Rosetta, Targetbase, The Agency Inside Harte-Hanks, True Action, and Wunderman. Contenders Meredith Xcelerated Marketing and Quaero meanwhile bring unique capabilities to clients looking for a CEA-type partner within specific verticals.