In the case of #Wikipedia, though, printed copies should always offer &/or be accompanied with electronic copies. Wikipedia should really be under copyleft and it's not.
After all, paper printout is but a rudimentary form of DRM.
I'm not saying CC-BY-SA is useless and shouldn't exist, I'm saying there **is no** #copyleft in the CC license group. CC even used to encourage photographers license scaled versions CC-BY-SA & keep high quality images proprietary.
Cc: @cwebber @wikipedia @dos @dpk
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.