[youtube=http://www.youtube.com/watch?v=_44RGAIF3JQ&hl=en&fs=1&] Video from the lightwriting workshop at the 2009 sound:frame festival headed by Lichtfaktor, a German group of light graffiti artists. I was inspired to check up on this amazing group after reading the WebUrbanist article 10 Light Graffiti Artists and Photographers (via somuchstellarstuff).