Definition:
A
public service announcement is an advertisement that a television or
radio station airs for a cause or a charity. They can tout the
importance of medical check-ups for children or ask you to donate to the
Salvation Army's bellringers.
Public
service announcements are not paid advertising. A broadcaster donates
the ad time as part of its commitment to serve the public interest.
You'll
typically see public service announcements airing during weaker time
slots or on stations with less share of the advertising market than
their competitors. Stations tend to use these announcements as fillers
during commercial breaks.
Some
stations make a decision to devote a certain number of ad slots to
PSAs, particularly for a campaign that has local impact. In a city with a
high teenage pregnancy rate, a Top 40 radio station that is top-ranked
with a young audience could air announcements on abstinence or birth
control throughout its broadcast day.
While
stations have a government mandate to serve the public interest, they
are under no requirement to run general PSA's. If a station has a paid
commercial to run in a 30 second slot, that ad will get priority over a
non-paid announcement.
Example:
POSTER
Poster is a placard or intended for posting in a public place, as for adversiting.
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