Not sure if Bansky has hit Berlin or not really, but now you have a better chance of finding out. Adidas has created an iPhone app that acts as map and guide for locating street art in Berlin. So, if you’re tired of yet another museum or monument, take to the street gallery with the Urban Art Guide. Backpacking ain’t what it used to be.

Clean tagging, or reverse graffiti, follows a very simple principle: clean in order to draw. We’ve all done that on a dirty car (yes, Wash me!!!). So is this environmental activism, art or vandalism? Alexandre Orion’s ‘wall of skulls’ in Sao Paulo is both stunning and very disturbing. It’s a beautiful piece of street-art that instantly reminds drivers of the impact their emissions are having on the environment by revealing the dirtiness of the tunnel. Authorities find themselves in a troubling dilemma: so far there’s no law to prevent you from cleaning a wall… In Sao Paulo they were so embarrassed that they ended up cleaning every other tunnel in the city.

Paul Curtis (UK), better known as Moose, explains “All I’m really doing is cleaning. Surely people can’t have a problem with that?” Actually they do have a problem and Moose was ordered to clean up his clean act. The irony is it only takes a few days for pollution to “naturally” cover it.

Apparently this has been going around for a little while, but the sheer effort, not to mention volume of paint, of this street art (I hesitate to call it grafitti) is impressive. Muto is “an ambiguous animation painted on public walls” according to Blu, the Italian artist behind this. Blu is known for the political and social messages in his work and I’m sure you can easily draw connections to another well-known artist, Banksy. Check out the rest of Blu’s site. The sketchbook is amazing. (via Gizmodo)