Neilsen ratings tell sponsors which programming captures the demographic interested in their product at useful fractions of the viewing audience, and correspondingly what the networks should charge their sponsors to advertise during that programming.
The worse the Nielsons, the more discounted/cheaper adtime is, the less effective the advertising is at firing up the American public to buy, buy, buy. Although most sponsors (who are not Ford) can't usually afford to buy adtime where their ads will be most effective because that time of night during a particular show that is very popular is at a premium and good for all and any sponsor.
Gotta be smart, because conversely what's the point in buying the worst/cheapest adtime if it doesn't access any of their potential customer base by age group, gender and income bracket (I don't think they measure sexual orientation, which would be an excellent way to meter consumer interest if it wasn't also offensive. It shouldn't be "more" offensive, but it is. Thank you Hitler.)?
By the Numbers publishes the Nielsen numbers informatively and entertainingly, so that we become aware which shows are safe, which shows are in danger and which shows are just outright ####ing doomed.
There's always doomed TV I'm not so happy about the doomedness of.
My Crazy Ex-Girlfriend.
[yt]https://www.youtube.com/watch?v=lDFRC7OwREk[/yt]
(Also a Musical.)


