The map created by Open Street Map, a project building a free, open-source, editable map of the world, is now available as a layer in Bing Maps .
Users who download the OpenStreetMap app (and Microsoft Silverlight) can switch between the traditional layers, which include bird's eye, aerial and standard street map views, and Mapnik, a colorful map that includes businesses and landmarks labeled by users and devices through Open Street Map.
All the information is over at www.readwriteweb.com