![](http://photos1.blogger.com/blogger/353/70/320/calling_card_ads.jpg)
"Half of Americans are reported to use prepaid telephone cards. Each time a card is used, the consumer has to follow the audio directions to place a call. Now advertisers can interrupt those directions twice, with five seconds of branding and promotions. Those messages can be reinforced with print copy on both sides of the card." Company: Pocket Billboards
-- Media Life Magazine