If you've been following the announced partnership between LessWrong and Castify, you'll know that we would like to start offering the promoted posts as a podcast.
So far, everything offered by Castify is authored by Eliezer Yudkowsky who gave permission to have his content used. Because promoted posts can be written by those who haven't explicitly given us permission, we're reluctant to offer them without first working through the licensing issues with the community.
What we propose is that all content on the site be subject to the Creative Commons license which would allow content posted to LessWrong to be used for commercial use as long as the work is given proper attribution.
LessWrong management and Castify want feedback from the community before moving forward. Thoughts?
Edit: EricHerboso was kind enough to start a poll in the comments here.
David is correct about the way the copyleft works, which almost no one ever is: your content never "becomes" copylefted just because you build upon a copylefted work; you must either explicitly license it under a compatible license, be using the original work in a way that doesn't require a license (fair use, de minimis, etc.), or you are infringing.
Just to go into slightly more technicalities: if CAR doesn't take copyrightable expression from CAH, you can license original work in the new game under a different license; the share-alike requirement doesn't get triggered if what you got from the original wasn't something that would have been protected under the original license.
What counts as taking copyrightable expression can be pretty fuzzy, though. I haven't compared the two games--just clarifying the requirement. And practically, it's advisable to use the BY-NC-SA license from CAH if you're at all unsure.