[rquote=2573799&tid=147739&author=GypsyGoth]How do they know what we watch?[/rquote]
Well they dont know about everyone, some people have BARB boxes connected to there television/sky etc which registers what they watch. They work out by maths I guess the proportion of how many people that having the boxes to the rest of the country. Apperently the UK have the most precise way of taking ratings.
http://en.wikipedia.org/wiki/Broadca...Research_Board