A site that may be of interest (or a source :)):
http://www.burningwell.org/
"BurningWell is a repository for public domain (free for any use)
images. You are free to download, copy and use the photos you find
here for any purpose."
They're running Gallery 2. I wonder how it will scale.
They make anyone submitting a photo with people in it also submit a
model release.
cheers
Brianna
--
They've just been waiting in a mountain for the right moment:
http://modernthings.org/