In the story "Starcom, Rentrak TV Data Could Challenge Nielsen" (
Media Daily News, March 25), it is Starcom MediaVest Group Exchange (SMGX), the ad-buying unit for Starcom MediaVest Group, that
made a deal with Rentrak. Also, it is MediaVest USA that has a set-top deal with research company TRA, not SMGX. Starcom USA, MediaVest USA, and Spark, are media agency shops within the Starcom
MediaVest Group.
