At Wikinews we use Flickr fairly often, copying properly-licensed photos to the Commons. Several times now I've even approached authors of images there and asked them to relicense some good-looking photo to cc-by or cc-by-sa.
Flickr used to have a web-based search for creative-commons-licensed images. That search is now for some reason disabled, but I've written an app for Windows that uses their API and lets you do a (rudimentary) search for Flickr images matching a particular license (Attribution and Attribution-ShareAlike obviously are the only ones that work for the Commons). The tool's homepage is http://tiredbrain.com/wikinews/flickr/ if anyone else is interested.
-ilya
From: Sj 2.718281828@gmail.com Subject: Re: [Wikipedia-l] FlickR
Hey, excellent. Sadly, flickr doesn't want you to be able to transclude high-res images from their server... so there's still a reason to duplicate images there and on commons.
SJ
On Mon, 14 Mar 2005 00:39:46 +0100, Kurt Jansson jansson@gmx.net wrote:
Andrew Lih schrieb:
There is also a Wikipedia gallery in Flickr: http://www.flickr.com/groups/48889047191@N01/pool/
It says "no permission" if you are not member of the group. So after creating an account, use the following link to join: http://www.flickr.com/groups/48889047191@N01/
There is also a Wikipedia-tag: http://flickr.com/photos/tags/wikipedia
Kurt