The picture above is an example of how warchalking might look like. Maybe not something that you understand instantly, but if you go over to Everything Burns and look at the proposal there, you might get a better idea of what it means.
Warchalking is the hobo-language for free wireless networking, in short – a way for people to mark where good wireless networking is available.
Starting in London, people are marking WiFi spots in chalk on the street, called Warchalking. Just like the hobos of old, these WiBos(Wi-Fi Hobos) are marking places friendly to them. They are using take-offs of the hobo sign system to mark places where bandwidth is available
[Via Sifry’s Alerts]