Looking for a royalty-free photo?March 15, 2010
Then head on over to this list of some 40 sources of royalty-free stock images: http://www.instantshift.com/2009/03/03/40-sources-to-download-high-quality-royalty-free-stock-images/
I was familiar with a couple of them (MorgueFile and Flickr’s Creative Commons photos), but most were new to me.
Also, take a look at PhotoXpress: http://photoxpress.com/
[Link last checked March 2010; thanks to @dmnguys who Tweeted these sites a few weeks ago]