Arbitron has made it official — the Portable People Meter (PPM) rollout will resume this fall. Eight markets, including the three largest (NYC, LA, Chicago) will go "currency" with the release of September PPM data on October 8th.
Arbitron has made it official — the Portable People Meter (PPM) rollout will resume this fall. Eight markets, including the three largest (NYC, LA, Chicago) will go "currency" with the release of September PPM data on October 8th.
