2008/11/3 geni geniice@gmail.com:
Okey lets consider photobucket as an MMC. It allows anyone to register (and then nags you if you don't use the thing but eh). It allows you to take any image download it, edit it and (because they largely ignore copyright issues) re-upload it. And the ability to do all of this is at least as prominent as wikipedia. You therefor accept photobucket as an MMC.
And if they mandated GFDL licensing for all their collection of images, this might be relevant.
But let's go back to the original point. Even in the event we decide the collective set of Wikimedia wikis is not an MMC in the context of uploaded material, where does it leave us?
a) They're still undeniably a MMC for text b) So we can relicense, etc, our text c) We just end up with some GFDL-only images d) ...which we'd have had anyway, because of ones licensed under a specific vesion.
It just makes dealing with the GFDL images marginally more of a headache.