http://images.google.com/imgres?imgurl=http://ocw.mit.edu/ans7870/21l/21l.705/f03/studymaterials/melvilleimages/soapine.jpg&imgrefurl=http://ocw.mit.edu/ans7870/21l/21l.705/f03/studymaterials/melvilleimages/image23.html&h=295&w=500&sz=70&hl=en&start=14&sig2=St3fVuDiXNhRmt3fp_BPmw&um=1&tbnid=e9NbLlcIKHVegM:&tbnh=77&tbnw=130&ei=f3B1SL_VK5nSeuX74fAC&prev=/images%3Fq%3Dadvertisment%26ndsp%3D18%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:*:IE-SearchBox%26rlz%3D1I7SUNA%26sa%3DN
http://images.google.com/imgres?imgurl=http://www.disneyfrontier.com/wp-content/uploads/2006/12/pirates_of_the_caribbean_3_movie_poster.gif&imgrefurl=http://www.disneyfrontier.com/2006/12/27/pirates-of-the-caribbean-3-movie-poster/&h=634&w=428&sz=81&hl=en&start=8&sig2=DRWxFmq3ZTNifxmFm30QIw&um=1&tbnid=JFULW7XAWcLCDM:&tbnh=137&tbnw=92&ei=23B1SO3VHaKSec2M6OcC&prev=/images%3Fq%3Dmovie%2Bposter%26um%3D1%26hl%3Den%26rls%3Dcom.microsoft:*:IE-SearchBox%26rlz%3D1I7SUNA
These links I found show many uses of sdvertising. They advertise movies, soap and coffee. It works becuase if there is an advertisment you like you will buy the product.