[OSM-legal-talk] "DIY mapping" and "Power to the People" letters

[OJW]

On Wednesday 05 September 2007 20:22, 80n wrote:
> Maybe we should say "Free of charge" - they'll understand that.

Surely that's the worst phrase to use?  Google maps are free of charge. 
Ordnance Survey maps are often free of charge. Peoplesmap is free of charge. 
Illicitly-copied maps are free of charge. 

What would differentiate OSM in their minds, from those other projects?