[QUOTE=hedayat;1479050]While OSM might not be as complete as GoogleMaps (or Nokia) (well, it highly depends on the area. some areas have high quality maps donated by governments or companies. In my area, it really has usually better coverage than Nokia one which lacks a lot in details).

OSM is far more complete and accurate than Google or Nokia maps. It just lacks good applications that are user friendly and can cache maps locally.