Hmm, yeah, that's a feasible solution. Changing the attitudes/instructions might take a while, but it'd probably be worth it in the end.
Change the way to do flickr reviewing. If the image differs from flickr,
I use to delete those images with flickr source which don't have a free
license, because it's too improbable that an image uploaded two days ago
has changed its flickr license to an unfree one.
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