View Post Ad Biz | Agencies Publicis Groupe Buys Up Rokkan By Kiran Aditham on Dec. 20, 2012 - 12:05 PM Well, this is a pretty notable item as we wind down for the holidays. Twelve-year-old, New York-based digital agency Rokkan, which works with clients ranging from Stoli to Sharp to Caesars to JetBlue (and was NOT for sale as of la ...