[OSM-talk] Voluntary re-licensing begins

[Cartinus]

On Thursday 12 August 2010 13:45:49 David Groom wrote:
> 1)   The last sentence of clause (1) of the contributor terms requires YOU
> to have EXPLICIT permission from the rights holder.  Please consider if you
> have this EXPLICIT permission, if you do not have it then  you CAN NOT
> agree to the contributor terms
>
> 2) There is a large amount of contributors who have traced imagery from
> sources such as Yahoo

Yahoo aerial imagery is supplied under some terms (sorry too lazy to look them 
up right now). Sometime in the past someone(s) from within the OSM project 
asked them if tracing from those images to make a map was possible within 
those terms. They answered: Yes, this is possible.

Now can somebody explain to me why this would not be explicit permission?

-- 
m.v.g.,
Cartinus

P.S. English is not my native language and legal English, legal German, etc is 
like Chinese to me.