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→Why?
Our data content (in the Item and Property namespaces) is covered by the Creative Commons CC0 Waiver (see {{Q|38}}), which states that you are free to share (copy, distribute and transmit) and remix (adapt) the work. '''Our [[Project:Terms_of_use|terms of use]] covers the ethical and social norms for attribution that we expect from research, journalistic and activist communities'''. For any reuse or distribution, we would appreciate that you make clear to others the CC0 terms for the work. The best way to do this is with a link to this web page. Again, this license is fairly permissive, so you shouldn't feel paralyzed by legalese if you are interested in using or redistributing our data content. Just be sure to read the [[Project:Terms_of_use|terms of use]] and if you have any questions about fair use, don't hesitate to contact us. A detailed FAQ on CC0 can be found [https://wiki.creativecommons.org/wiki/CC0_FAQ here], which was written by the Wikimedia community.
Our data content (in the Item and Property namespaces) is covered by the Creative Commons CC0 Waiver (see {{Q|38}}), which states that you are free to share (copy, distribute and transmit) and remix (adapt) the work. '''Our [[Project:Terms_of_use|terms of use]] covers the ethical and social norms for attribution that we expect from research, journalistic and activist communities'''. For any reuse or distribution, we would appreciate that you make clear to others the CC0 terms for the work. The best way to do this is with a link to this web page. Again, this license is fairly permissive, so you shouldn't feel paralyzed by legalese if you are interested in using or redistributing our data content. Just be sure to read the [[Project:Terms_of_use|terms of use]] and if you have any questions about fair use, don't hesitate to contact us. A detailed FAQ on CC0 can be found [https://wiki.creativecommons.org/wiki/CC0_FAQ here], which was written by the Wikimedia community.
=== Why? ===
=== Why not a copyleft license on data? ===
We came to the conclusion that this was the best licensing model after some hesitation. This hesitation stemmed from the hope that it would be possible to construct a copyleft data license, or reuse the only existing one ({{Q|1583}}). We became convinced this was futile and thus a bad idea through reading these references: {{Q|2008}}.
We came to the conclusion that this was the best licensing model after some hesitation. This hesitation stemmed from the hope that it would be possible to construct a copyleft data license, or reuse the only existing one ({{Q|1583}}). We became convinced this was futile and thus a bad idea through reading these references: {{Q|2008}}.
So what should we do instead, especially given that we want to recognize the work of everyone in this space? The tl,dr of ''{{Q|2907}}'' is "say no to licenses, say yes to norms". This is what we tried to define above, linking to our [[Project:Terms_of_use|terms of use]].
So what should we do instead, especially given that we want to recognize the work of everyone in this space? The tl,dr of ''{{Q|2907}}'' is "say no to licenses, say yes to norms". This is what we tried to define above, linking to our [[Project:Terms_of_use|terms of use]].
=== But my license over data should work! ===
* ODbL (copyleft database licensed, used by OpenStreeMap):
{{Quote
|text=
Unfortunately, many people have a good-faith desire to see copyleft-like results in other domains. As a result, they’ve gone the wrong way on this point.
ODbL is probably the most blatant example of this: even at the time, Science Commons correctly pointed out that ODbL’s attempt to create database rights by contract outside of the EU was a bad idea.
Unfortunately, well-intentioned people (including me!) pushed it through anyway. Similarly, open hardware proponents have tried to stretch copyright to cover functional works, with predictably messy results.
|author={{Q|2906}}, one of the authors of the ODbL, who worked for OpenStreetMap at the time}}
=== Other datasets ===
=== Other datasets ===