Most public service ads are sponsored by organizations that have been established to deal with a particular issue.

She said the coalition had previously produced a public service ad but it did not receive exposure.

"Getting this kind of television exposure is fantastic, especially now that it has become harder to get public service ads broadcast."

The city also plans to run public service ads during the holidays.

Previous campaigns for the association ran as public service ads, on a pro bono basis.

She cautioned that public service ads are not necessarily effective.

The government continued to fund public service ads warning against trafficking.

Elected officials should not to appear in public service ads during their election.

Since 1985, the amount of free space going to public service ads has nearly doubled, to $667 million last year.

The headline is one typically found in a public service ad, too: "Volunteers needed."