I basically know comcast knows what you watch when you watch on it's stream tv app and cable television. but does comcast report that data to nielson?
I even know DVR watching and recordings get reported.
but does Nielson get that info?
Nielsen gets ratings from Neilsen Families. Certain households are chosen and they either keep a diary or use a set-top box hooked to Neilsen. Comcast and other cable companies do not collect ratings for the Neilsen Company. Here's how it works: