Melissa, the brand of plastic shoes in Brazil is already well known. Recently they launched its new Autumn-Winter collection 2011-2012. For promotion Melissa turned to the advertising agency Casa Darwin to host an open gallery in Sao Paulo with the only area of Post-it. A spectacular installation in the form of progressive mural covered the walls of the Melissa Gallery with a total of 350,000 square papers. Five months of work with 25 artists were required to complete this artistic experience (some sweet little words written on post-it). At the end the following video came into existence which has become viral.