[rmc]

With OSM, just start mapping! It's a wiki! http://wiki.openstreetmap.org/wiki/Beginners%27_guide

[toyg]

That won't help Apple users though -- OP points out that the map data is stale (possibly two years old). It suggests there was a one-off dump at some point which was then used to build the service.

[stephen_g]

I doubt they would dump once and never update it... Eventually they'll need to update or the maps will be useless...