There has been a bit of a kerfuffle around the new flickr feature called Wall Art, which was a curated collection of images from flickr, you can order canvas or board mounted prints. The original description said that “Licenced Artists” would receive 51% (which appears considerably more generous that red bubble and similar services). A real problem was flickr had include a lot of Creative Commons images, without regard to the licence type, and the submitting photographer Many of the flickr community where understandably upset and flickr has wisely decided to remove any creative commons works, for the moment and refund on any purchases.
I think the scheme is fine but it should be based on an opt-in or at least and invitation to participate for selected images (it is supposedly curated after all). The good outcome is flickr reacted quickly and in tune with their community.
Are you listening google+ and facebook?