On Tue, Aug 4, 2009 at 12:49 PM, Michael Snowwikipedia@verizon.net wrote: [snip]
I cannot fathom why you would limit media to being released only under the GFDL unless it was designed specifically for incorporation into a GFDL work. It's a documentation license, not a media license, and when applied to radically different contexts it will still be free in the dogmatic sense, but it may no longer be all that useful.
Because, unfortunately, representatives of Creative Commons have asserted that CC-By-Sa licensed media can integrated as a whole integrated into non-free works, producing a result which is not freely licensed. In other words— that the cc-by-sa copyleft is nearly moot in the context of images since they tend to be either incorporated verbatim or subject to only trivial non-copyright deserving modifications even when the the resulting work as a whole clearly builds upon the illustration and isn't merely a collection of separate things.
The license text itself appears to be reasonably explicit on this matter— but I feel it would be unethical to use CC-By-SA when doing so would cause me to end up litigating against people who were merely following, in good faith, what they believe to be authoritative advice.
GFDL licensed images are still perfectly usable in freely licensed reference works, in spite of the inconveniences in the license. It's unfortunate that there doesn't currently exist an "unclouded" copyleft license which is well suited for photographs.