Stuff

This is cool, and it's in NYC (soon to be West Coasted): Yellowarrow! This half-graffiti-half-tourguide-half-interactive art project allows anyone to stick a SMS-tagged yellow arrow sticker to any urban monument and upload their ideas about that monument to yellowarrow.org. To retrieve these ideas, passerbyers send a textmessage to Yellowarrow including the yellow sticker's alphanumeric code. Yellowarrow then returns the goods.

What feature of your city would you annotate if you could only choose one?