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Licence and Legal FAQ/Why CC BY-SA is Unsuitable: Difference between revisions

 
== Share-Alike ==
 
One of the Use-Cases for the new license, entitled "OSM in Google Map Maker" [8], says; We would like to avoid someone like Google loading the whole of OSM into their Map Maker system, where Google then lay claim to any further improvements made by users. It is ok for them to load OSM, but improvements must then be shared back. In such a case, Google would be required to distribute the rendered tiles under CC BY-SA, but they would be free to continue to use and improve the data without releasing it. This is a case which the community does not want to happen, yet it may be possible under CC BYSA. While a rendered map must be distributed under CC BY-SA, there is no requirement in that license to release the data from which the map was rendered. This allows a situation in which OSM data can be improved using some additional data source or effort, the result rendered as tiles distributed under CC BY-SA, but the improved data may not need to be made available.
One of the Use-Cases for the new license, entitled "OSM in Google Map Maker" [8], says;
 
<blockquote>
We would like to avoid someone like Google loading the whole of OSM into their Map Maker system, where Google then lay claim to any further improvements made by users. It is ok for them to load OSM, but improvements must then be shared back.
<blockquote>
 
In such a case, Google would be required to distribute the rendered tiles under CC BY-SA, but they would be free to continue to use and improve the data without releasing it. This is a case which the community does not want to happen, yet it may be possible under CC BY-SA.
 
While a rendered map must be distributed under CC BY-SA, there is no requirement in that license to release the data from which the map was rendered. This allows a situation in which OSM data can be improved using some additional data source or effort, the result rendered as tiles distributed under CC BY-SA, but the improved data may not need to be made available.
 
== Attribution ==