In America, stations in PPM markets are racing to get their hands on a Voltair unit. If they believe Voltair improves how the PPM picks up their signal, managers want one. Perhaps you already have one and you see what just happened in Canada. Are you worried Nielsen will pull the plug on your investment, which might also result in a ratings decline? We asked Numeris CEO Jim MacLeod if he thought what's happening in Canada could also happen in the United States. HERE'S WHAT HE HAD TO SAY