Posting here as sometimes the admin noticeboard seems a bit too quiet...
I've seen comments that this is happening more frequently now, where
[[User:Foo]] will suddenly say, "I withdraw release/copyrights/permission/I
just want all these 20-100+ images removed from Commons". I had one that I
reverted on 10 or so images the other day where the uploader wanted
images--good ones at that--from 2006 deleted because Google was indexing
them on Commons. They were all images of random streets in another country.
Should the upload forms be more clear/explicit and politely in-your-face
that once material is released under copyleft/GFDL, you can't technically
undo that?
- Joe