http://www.techcrunch.com/2008/12/24/fotonauts-opens-up-a-little-more-skip-t...
The site is at http://www.fotonauts.com/ . Everything I could see is CC-licensed, including -NC licenses, so tread carefully when copying images.
Their tagline appears to be "The Wikipedia of images." I left a message on the TechCrunch story pointing out that the "Wikipedia of images" is Commons ...
- d.