What is Cultural or Social Poster Design? How will poster design impact the world? Can designers communicate and change the world? What are the principles for a good poster design to be effective? These are questions that many designers are seeking answers for answers. We have seen lately resurgence of  new fresh blood designers, who are eager to design posters for good. Posters to convey their own messages, their own feelings, frustration or happiness, political ideas, or antiwar messages, but they fail. Why? I think because most of the graphic designers, do not know the value or the power of poster design. They do not know it’s importance, thus they do not know how to effectively present the message, or how to capture the attention.  Can those who seek to find the answers find the path? Who will teach them? Unfortunately, we can’t do this in this article, but we can give the advices and inspire them through the words of 7 unique, significant Poster Designers. We have the honor to host here Andrew Lewis from Canada, Antonio Castro from Texas, Chaz Maviyane-Davies from Zimbabwe, Luba Lukova from USA, Mehdi Saeedi from Iran, Michael Thompson from Jamaica, Pekka Loiri from Finland, and Susana Machicao from Bolivia. All are eager to share their ideas and knowledge on Poster Design.