Upon preparing my 2008, 2009 DeLorme gps tracks for gpx upload conversion, a total covering my 150k +-miles across the US. I stopped to review the OSM media-wiki for batch instructions because it's been a while. Upon review I got off on a tangent regarding "legal OSM data usage".
See my blog entry. Message was to long to post and got truncated.
It is in regards to what is considered legal allowable OSM data usage.
Here's the link