Posters as Advertising Tools How would you use a printed poster as a marketing tool? Many companies charities, churches, or organizations use monthly posters to do their advertising for them. Cheap poster printing-services offer you a way to advertise at a low cost. You can have a beautiful images the poster or just words. It is completely up to you. You can print huge wall posters or leaflet posters. Most of us are used to seeing standard size posters that advertise events.