Tag Clouds is an art project by Mathieu Tremblin where he cleans up graffiti making it legible. Tremblin paints over existing graffiti tags and replaces them with easy to read words and symbols.
The principle of Tag Clouds is to replace the all-over of graffiti calligraphy by readable translations like the clouds of keywords which can be found on the Internet. It shows the analogy between the physical tag and the virtual tag, both in form (tagged wall compositions look the same as tag clouds), and in substance (like keywords which are markers of net surfing, graffiti are markers of urban drifting).
