It's deja vu all over again to read that Nielsen is getting back into the radio ratings business. My earliest awareness of radio ratings came in the mid-60's as a high school kid growing up in Chicago. My hero, Dan Sorkin, who, among other things, is credited with discovering Bob Newhart, got the Nielsen book one day, and there was a zero in his time slot on WCFL-- Nielsen said he didn't have any listeners. He started talking about it on the air, and asked his listeners to stand in front of a bright light. If they saw their shadow, it was proof that they really existed. He got his listeners to start a letter-writing campaign to Neilsen, and then organized a protest march at their Chicago headquarters on Howard Street. A bunch of us showed up with plenty of clever, funny protest signs. I have photos somewhere in a box in my basement. Shortly after the protest, Nielsen stopped doing radio ratings.