In March 2008 James Powderly and Evan Roth of the New York-based Graffiti Research Lab (G.R.L.) spent time in Adelaide during the Festival as guests of Carclew Youth Arts. The Graffiti Research Lab is dedicated to outfitting graffiti writers, pranksters, artists and protestors with open source tools for urban communication. Today, an inventory of street artforms would include tagging, muralling, political sloganeering, stencils, stickers, paste-ups, installation, guerilla projection, culture jamming, and advertisement hacking. Powderly and Roth define graffiti as anything that happens outside in the city without permission. At the heart of all G.R.L. projects is the concept of open source , and perhaps it is this approach that has been their greatest area of influence.