Am 1.-3. Februar 2013 findet in Essen ein OpenStreetMap Garmin Hack Weekend statt.
http://wiki.openstreetmap.org/wiki/Garmin_ProjectGeocachers and other people approaching the booth often didn't know where to look for maps, knew only one map provider or had no idea (and no interest) about the wiki. While using their GPS on a daily basis, they were often inexpirenced with searching the web for information, navigating wikis and downloading from ftp servers or raw http listings.