The phrase "increase viewership" is correct and can be used in written English.
It is typically used to refer to the act of increasing the number of people who watch a particular show, program, or event. Here is an example sentence: "The new marketing campaign helped to increase viewership for the popular TV series, attracting a larger audience."
It may sell newspapers and increase viewership, but it is also a narrow view.
Mr. Schiavone will help Fox News, part of the News Corporation, with assignments to help increase viewership and advertising sales that include research into consumer awareness.
He said that NBC had data to show that live streaming could increase viewership of a event shown hours later on delay.
"The changes we made with Fox last year to start the World Series games earlier helped increase viewership, including more young fans," Commissioner Bud Selig said.
Fox has done little to tamp down speculation around "Idol," perhaps hoping that the intrigue will help it accomplish something that it has not done since 2006: increase viewership.
The absence of much coverage of the current campaign is exacerbated by timing: the June 2 primary immediately follows the May television ratings "sweeps" period, when local newscasts run all sorts of sensational stories and series intended to increase viewership.
Cruz connected Trump to the increased viewership of the televised presidential debates.
"Reporting hasn't evolved with the rapidly increasing viewership patterns," Ms. Copland noted.
Shorter videos play better on mobile devices (longer videos still have a healthy desktop audience and increasing viewership on tablets).
The first weekend of the N.B.A. playoffs demonstrated that the league's increased emphasis on cable television in its new contract is not necessarily geared to increasing viewership.
Increased viewership in the wake of the Sept. 11, 2001, terrorist attacks played a role in the ratings declines this season.
