[OSM-legal-talk] Share alike

[Maarten Deen]

On Thu, 18 Nov 2010 10:53:42 +0100, Martijn van Exel <m at rtijn.org>
wrote:
> Hi all,
> 
> I don't fully understand the extent of the 'share alike' clause in
> the CC-BY-SA license. It states:
> 
> "If you alter, transform, or build upon this work, you may distribute
> the resulting work only under the same or similar license to this
> one." (from the deed of the 2.0 version of cc-by-sa,
> http://creativecommons.org/licenses/by-sa/2.0/)
> 
> Consider this case: someone wants to use OpenStreetMap data augmented
> with POIs from a closed source in a routing application. This routing
> application is then used within the company for which it is built, for
> commercial purposes.  Do the POIs need to be released under CC-BY-SA?
> The word 'may' implies they do not.

It is not "may", but "may only". And that translates to "only allowed
to".

The dutch translation is similar: "mag" and "mag alleen".

Regards,
Maarten