[OSM-talk] License plan

Ben Laenen benlaenen at gmail.com
Fri Feb 27 13:04:54 GMT 2009

It looks like we finally got some kind of "License plan" for the step 
towards the new license, so everyone check 

Let me start with the obvious questions first:

* why don't you split between the votes whether you like license X and 
the question whether you're allowing the change of license on your 

After all, I want to have an idea *how much* of the data will still be 
there after the second vote. If it turns out that any data from someone 
who gave his approval would be deleted, then count me as no vote.

* I still have no response to the question what would happen with my 
data if it's derived from someone who doesn't give it's approval for a 
license change.

The second person could be tracing yahoo images and later someone else 
added all the names after a lot of work on the ground. So he can only 
see the removal of his work.

And how are you going to check that anyway? You can do lots of things 
with CC-BY-SA data (copying, splitting, merging) where it's impossible 

My understanding is for example that if you split a way, there's not a 
single connection between the two parts of the way telling that one 
derived from the other.

And what with the countless relations? If there's one way added to it by 
someone that didn't give approval, the only thing you can do is remove 
the relation as it was derived from CC-BY-SA data. Goodbye to your 
hundreds of kilometers long routes.

* "Website to allow users to voluntarily agree to new license. Design 
allows you to click yes, or if you disagree a further page explaining 
the position and asking to reconsider as there may be a requirement to 
ultimately remove the users data. This will help stop people 
accidentally clicking 'no'. Sign up page now states you agree to 
license your changes under both CCBYSA and also ODbL."

Question: how's that not pushing the new license onto the mappers?


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