Poster art is one of the most well-defined forms of art that has a rich historical background that involves a number of famous artists throughout the world. Ranging from advertising campaigning to political and social awareness, posters have made their mark well on the walls of history. These interesting pieces of paper are a frequent tool of advertisers, propagandists, protestors and other groups trying to communicate a message. Another type of poster is the educational poster, which may be about a particular subject for educational purposes. However, whatever their purpose may be, posters have inherited a rich legacy of art and artists.