http://www.sxc.hu/index.phtml

http://www.flickr.com/

http://www.pdphoto.org/

http://www.openphoto.net

http://www.ourmedia.org/

http://images.google.com/

http://freestockphotos.com/

http://www.imageafter.com/

http://www.morguefile.com/archive/