So as I noted on Twitter [1], we never intended for the wiki content
to be Noncommercial-licensed, and the NC license that shows on the
wiki edit page is just the unchanged DokuWiki default. The only
statement we've ever made on this was the one Rintze quotes above:
"Feel free to copy and repurpose any content (text, images, videos,
etc.) from the Zotero website to help support and promote Zotero."
We should have addressed the default license, though, so I apologize
for the ambiguity. (Rintze created a licensing page [2] that
repeated the CC-BY-NC-SA claim after not receiving a response to the
above message.)
People can safely assume that anything written by the core team is
CC-BY-SA, and I imagine the primary contributors would all say the
same. Obviously things get a little complicated for content with
mixed edits by occasional contributors or that were copied from
other pages without clear history. While I suspect few past
contributors would be opposed to a non-NC license, we can't really
change it unilaterally if that's what was showing when they made
edits, so I'd ask that past contributors add their wiki usernames to
https://www.zotero.org/support/wiki_contributor_license_agreement if
they agree to license any previously contributed wiki content as
CC-BY-SA. If you don't remember your wiki account info, you can also
just email me and I'll add your username to the list.
Going forward, we'll change the default license to CC-BY-SA and
clarify that people wishing to use older content for commercial
purposes should check the revision history against that contributor
list.
Thanks, and sorry for the trouble.
- Dan
[1]
https://twitter.com/billymeinke/status/591060189148618753
[2]
https://www.zotero.org/support/licensing