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Wikipedia to be Licensed Under Creative Commons
sla291 writes "Jimmy Wales made an announcement yesterday night at a Wikipedia party in San Francisco : Creative Commons, Wikimedia and the FSF just agreed to make the current Wikipedia license compatible with Creative Commons (CC BY-SA). As Jimbo puts it, 'This is the party to celebrate the liberation of Wikipedia'."
If you RTFM, it's not that they're moving Wikipedia from GFDL to CC-BY-SA; rather, the GFDL is becoming compatible with CC-BY-SA. If the GFDL license in use had the usual "or any future version" clause in use, then the content was initially given with permission for relicensing under this new version -- so no problem at all.
I heard RMS give a talk where he criticized Creative Commons (the organization) because not all of the licenses they publish guarantee freedom. As he put it (paraphrasing from memory): "If you take the intersection of all the licenses offered by Creative Commons, you get nothing. There are no core freedoms that all the licenses guarantee."
Basically, RMS thinks that some of the licenses are great (the ones that allow redistribution, derivative works, and promote share-alike), but thinks others are terrible. RMS is famous for being careful with words, and dislikes the fact that when you say "this is available under a Creative Commons license" it basically means nothing (until you know which specific license is being used, you don't know what freedoms are being guaranteed).
Of course the FSF's intention is to promote freedom, whereas the Creative Commons organization has as its core mandate something more along the lines of "promote understanding of copyright law, and show copyright holders that they don't have to use a maximal, all-rights-reserved copyright, but that they can distribute under more permissive licenses, too." The creative commons organization emphasizes author choice instead of user freedom.
Still, all that having been said, there is some clear overlap between the CC licenses and the GPL. So, an appropriate license can certainly be compatible, and I'm fairly confident that RMS approves of those freedom-granting licenses.
With my small army of rebels I take over the FSF and I create GPL v4 which is the equivalent of a public domain license. I fork all projects that are GPL v2 or any later version. I change the license of my forks to be GPLv4 because it still is in the scope of the original license (because of the later version clause). Now I use all my code for free! Yeah!
Principally that the GFDL has some clauses that make odd but relatively minor requirements. It bars the makers of derivative works from removing any "invariant sections" from the original work (does not apply to Wikipedia). Distributing any GFDL work requires that you distribute with it a "transparent" copy of the entire license, which is impractical for a single printed Wikipedia article, for instance. But the core rights that the GFDL grants (duplication, derivative works, commerical or non-commercial use) are the same as those granted by CC-BY-SA. The GFDL just contains some "FSF-isms".
Appropriately enough, the Wikipedia article on the GFDL includes a list of criticisms that cover this topic.
Never mistake "can" for "should".