The folks over at The Art of Manliness, put up a great set of vintage propaganda posters addressing a common modern social behaviour problem (Smartphone Etiquette). The posters are great and they remind us of simple ways to respect ourselves and others while on our smartphones. We all can relate to the messages in the posters and we all had encounters with at least one situation mentioned in the posters. Enjoy the posters.
Source The Art of Manliness