Shortly before June 9, Jennifer uploaded pictures of dresses and wrote articles about dresses. She was asked to stop uploading them if she couldn't prove that they are public domain, and she apparently has left. The articles were edited to not use the pictures. Should the pictures be deleted?
If you can't identify the source, then deleting is the safest option, if a bit paranoid (obviously, that policy in general will create a lot of false positives).
That brings up the more general issue, though: how to handle uploads in good faith that are useful but of unknown status. Especially after the new software is in place with it's image description and talk pages, I think the right thing to so is simply ask the uploader (on her user page, the image description page, and by e-mail if necessary) something like "Can you please document the source of this image so we can verify that we have permission to use it?" It is too much, I think, to ask random authors to hunt down copyrights, but not to ask them simply where something came from, to help us do it.
Also, before deleting an image, check the image itself for embedded comments. Both PNG and JPG allow text comments to be embedded in the file that don't appear on the image, and copyrights are often placed there (for example, my photos on the "SUV" and "Chess" pages contain that info). 0
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