Semiotics

www.youtube.com/watch?v=rEgxTKUP_WI is an excellent video about semiotics. Semiotics is defined as: the study of signs, and through them, it studies the origins of meaning in different languages of communication.

Examples:

http://www.adpunch.org/entry/if-you-pay-a-prostitute-youre-financing-human-trading/

http://adsoftheworld.com/files/images/bigpondrock.preview.jpg

http://adsoftheworld.com/media/print/bigpond_music_opera