re: #297 Belafon
Ratings used to be tracked by families having special boxes that reported information back to Nielson. There may be some reporting now with cable boxes, but I still think Nielson is the major player. If you’re not using your cable, or watching it through a streaming service that can track you, they can’t count you.
They used to do it by telephone, back in the old days before people were watching TV on their telephones.