Some more examples...
1 http://bostonist.com/2007/12/06/despicable_uses.php "Image of an old-school computer from Wikimedia Commons." Seems to be http://commons.wikimedia.org/wiki/Image:Science_museum_025_adjusted.jpg - PD so, OK.
2 http://bostonist.com/2007/12/08/bite_size_news_30.php "Image of a goat from Wikimedia Commons." Couldn't find this one but maybe one of Fir0002's? A nice shot.
3 http://www.popularmechanics.com/science/air_space/4234272.html "(Photograph by Shannon Arledge/U.S. Marine Corps via Wikimedia Commons)" http://commons.wikimedia.org/wiki/Image:ScanEagle_UAV_catapult_launcher_2005... PD, and we are making military photography more accessible, so that is great. :)
4 http://newsfromrussia.com/news/world/10-12-2007/102563-us_israel-0 "(commons.wikimedia.org)" http://commons.wikimedia.org/wiki/Image:Ehud_Olmert_%28Sao_Paulo_2005%29.jpg CC-BY from Agência Brasil. They fail on failing to name the author and failure to mention and link the license.
5 http://www.birdersworld.com/default.aspx?c=a&id=1046 "P. Alejandro Diaz/Wikimedia Commons" http://commons.wikimedia.org/wiki/Image:La-Jolla-Red-Tide.780.jpg PD, so OK
6 http://www.abc.net.au/science/articles/2007/12/20/2123903.htm "(Source: Wikimedia Commons)" Hm... probably http://commons.wikimedia.org/wiki/Image:Bradman.jpg , claimed as PD, which gives http://content-ind.cricinfo.com/australia/content/image/161569.html as a source, which says "(c) AFP"... so that's interesting :)
7 http://www.associatedcontent.com/image/184185/index.html "Copyright: Evb-wiki - Public Domain / Wikimedia Commons" Hm, I couldn't find it on Commons, anyway.
8 http://discovermagazine.com/2007/aug/did-t-rex-taste-like-chicken/ " photograph David Monniaux, courtesy of Wikimedia Commons" http://commons.wikimedia.org/wiki/Image:Palais_de_la_Decouverte_Tyrannosauru... GFDL, so points for trying, but fail.
hm, this could make a Commons drinking game ;)
cheers Brianna