OpenStreetMap is an open source project that gathers freely usable geographic data. Over 500,000 volunteers work on putting this open world map together using GPS devices (like smartphones). The crowd also create special maps, such as for shipping, cycling or maps to be included in navigation apps. The structure of the project is organised using an open licensed database, similar to a Wiki. Bing and Yahoo provide aerial maps and state activists in the USA now work in partnership with OpenStreetMap. However, this also means that privately licensed maps such as GoogleMaps may not be used to synchronise the data. The project is a prime example for network organisations.