On 7/26/06, Alphax (Wikipedia email) alphasigmax@gmail.com wrote:
What particularly irks me about Flickr is that people can change the licenses on their photos; I came across a Featured Picture on Commons the other day which had been uploaded in December 2005, tagged as CC-BY-SA 2.0, had been uploaded to Flickr in November 2005, but when I viewed the photo in July 2006 the tag on Flickr was CC-NC-ND 2.0. The worst part is that the image on Flickr has no "history" page, and the Internet Archive doesn't have the page, so there's no way I can verify that the image was indeed tagged that way when it was uploaded to Commons.
Even more unfortunately, enough people upload stuff with the wrong license that we can't just assume the stated license was actually correct at upload time, either.
-Matt