AdWeek reported on a new study by the Corporate Executive Board suggesting that marketers are moving to an "open-source" approach.  Instead of a single ad agency, marketers increasingly hire a diverse set of marketing partners based on specialized expertise.  The agencies' "proximity to individual consumer segments equips them with the knowledge needed to craft deeply resonant communications."  For Truman Company, this is a nice affirmation that we are on the right track with our focus on executives as distinct market segment.