@mangeurdenuage
> But we can, indirectly, limit legally if we use CC-BY-SA.

That won't limit it completely. When I said datamining was transformative and therefore fair use, I meant that it's exempt from Copyright protection in certain countries like the United States:

https://en.wikipedia.org/wiki/Data_mining
https://en.wikipedia.org/wiki/Fair_use

I haven't studied other countries in much detail, but I'd like to. I just don't have the time at the moment.