NYer Jake Dobkin ( Gothamist and Blue Jake) has just launched Streetsy , a Street Art photoblog, sponsored by the Wooster Collective. Programmed by Eliot Shepard ( slower.net), Streetsy is powered by Flickr's API and features 2,500 street art photographs from New York, Santiago, Paris and Tokyo.

Also, check out Streetart, aother streetwise photo site.