Social residue is a project that explores the relationship of online/offline hybridity to social connectivity, the mapping of complex social growth and the spread of 'memes,' that are brought and transmitted by artists and audiences during the show. By using a nontoxic invisible contamination simulation powder, Noah & Hyunjoo creates a gesture and organizational logic of mapping and cartographic spread vectors of social networks that develop during the show. During the transmission process, there are many different kinds of social interaction involved consequentially or inconsequentially. It symbolizes that artists and audiences' 'presence' and participation as performers whether they know or not. As a result of this performance, the visual map of spread vector will show the a multilayered spectrum of physical/virtual or online/offline networked systems through which social interaction is taking place in real time.