[OSM-legal-talk] CC-BY-SA for source data, other license for rendered derivatives

[rob at robmyers.org]

Quoting Richard Fairhurst <richard at systemeD.net>:

> AIUI substantial referencing of points from the OSM db _could_ be an
> infringement of database right.

That's a good point. I'll add it to the FAQ.

Clicking on a map will not always cause a point that exists in the 
source DB to
be chosen. If I click on dozens of points between two nodes on the M1, I have
not clicked on a point actually in the database, and so no actual data 
from the
DB has been copied. I don't know how the DB right handles this kind of
inference.

> The other month on talk (IIRC) I suggested that, since there are
> differing opinions on this subject, we take a "corporate" view that we
> do not consider it to be an infringement, and post that as a
> "clarification" to the licence. That would solve the problem neatly.
> But (again, from memory) I think Etienne asked what would happen if
> someone used it to plot the location of lamp-posts and then
> reconstructed a road from that. IMO this isn't a problem but, again,
> it comes down to what the community wants.

It's a difficult one. If it is the case that the law explicitly states that
clicking derives then we can't really say that it doesn't. If however 
it's open
to interpretation then it's definitely worth clarifying.

- Rob.