OpenStreetMaping using satellite images

As I've written before, I help out with OSM, mainly around Turku, but thanks to Yahoo, OSM can now use high-res satellite maps for some cities. Unfortunately, only the Helsinki/Vantaa/Espoo region is available here in Finland, but I've been making some progress in drawing some of the missing main roads around Helsinki, Espoo and Vantaa. I've also added some nice details like Helsinki-Vantaa and Helsinki-Malmi airports.