Why you SHOULDN'T watch your favorite shows on-the-air (or cable)

If you REALLY want to help a TV show you love, don't watch on the networks (including cable). Watch a (legal) streaming feed or DVR.  Why?

TV series live and die by the ratings, but many people do not realize that weekly ratings that lead to cancellation or renewal are only collected from the top 50 markets (cities) in the country.

On top of that, only a random sample of homes with "people meters" actually get counted, and then are project statistically.

So, if you live in a big city, but do NOT have a people meter, you don't get counted.  If you live anywhere else you do not get counted...if you watch your show over-the-air or on cable, that is.

On the other hand, ratings today take into account how many people streamed or DVRed the show in the seven days after the network/cable broadcast.  When you stream or DVR the show you DO get counted.

(Of course, this means streamed legally, or DVRed with a system that can "phone home" to report your viewing.  Bootleg copyright infringed streams, downloads, and old-style home video recorders don't get counted.)

The reality is, there are some shows that get twice or more as many views via legal streaming/DVRing than they do in the network/cable feeds. This is particularly true when you look at certain desirable demographics, like 18-49-year-olds. A three-times increase is not unheard of.

Because these streaming/DVR viewers still get commercials, the networks make money from every commercial you see, and profitability and return on investment is what gets a series renewed, or canceled if the return is too low. 

So the "broadcast plus seven" ratings are influential, and streaming/DVRing allows you to contribute to the ratings of the shows you like.  Or, if you still like the context of gathering for the broadcast at a specific time, watch the live feed but make sure you also stream it again, at least once, before seven days are up.

(Of course, this does not address original series from Netflix, etc, that are never on the broadcast and cable channels.  They are not counted in any ratings, other than the company's internal tracking of hits, downloads, and streams, which they rarely reveal.)

So again, of you REALLY want to help your favorite shows, make sure you stream them at least once in the seven days following the original network/cable feed and add your ratings into the renewal calculations.