Wikipedia in German has started to use OpenStreetMap as the default
map in some entries. OSMers / Wikipedians Kolossos and Peter Körner,
announced today, German-language articles with lat / lon coordinates
marked “map” would become a link to display an in-article map. That
map also shows markers to points from similar articles.
These contributors, and others have been doing very interesting things
with OpenStreetMap and Wikipedia. Very nice!
Their original announcement is found on the German OSM mailing list.