A current exhibition at the Fondation Cartier, a contemporary art museum founded by Cartier, is accompanied by an impressive online piece titled Grafitti Taxonomy: Paris 2009 [cartier.com] designed by Even Roth. The website contains a repository of abour 2,400 graffiti signatures, or tags, found in each of Paris's 20 districts between April 24 to April 28. Each tag can be explored to discover calligraphic-like similarities between individual text characters. The 10 most commonly used letters were identified for further study (i.e. A,E,I,K,N,O,R,S,T and U). From each letter grouping, 18 tags were isolated to represent the diversity and range of that specific character.
Those interested in grafitti should also check out the still unparalleled Graffiti Archeology repository.