FYI...
Open data serving rescue units and saving lives:
http://www.theatlantic.com/technology/archive/2013/11/how-online-mapmakers-a...
"The Wikipedia of maps
The changes were made to OpenStreetMap (OSM), a sort of Wikipedia of maps. OSM aims to be a complete map of the world, free to use and editable by all. Created in 2004, it now has over a million users."
kudos Simon for the link
cheeers, hugi