Audience Profiling

Some TV programs are aimed at specific audiences, audience profiling is knowing your audience to make your way of showing your media more effective. Audience types can include: age, gender, educational qualification, work experience, financial background, field of work, interests, mood, orientation, bias, food habits, religious background, physique, health condition. Some of these types might not suit all situations but the most often used ones are age and gender.

The demographic of a particular show's audience is also measured. This is often notated in an abbreviated form,^[2] e.g.:

• P2+ = Persons aged 2 or more

• P12-34 = Persons aged 12 to 34

• P18-49 = Persons aged 18 to 49

• A18-34 = Adults aged 18 to 34

• Men 18-34

• Women 18-34

- Wikipedia 

It's more useful to aim towards a specific target audience than to aim for anyone, because you'll have the right people interested in the topic. Younger generations prefer information to be simple and straight forward a, older generations prefer information to be more detailed and in depth.


Sources:
http://answers.yahoo.com/question/index?qid=20080929075444AAPJwsK
http://en.wikipedia.org/wiki/Audience_measurement#Demographics