Today whilst searching for inspiration for the next12by the dozen challenge I came across http://pixabay.com/ which promises that "You can copy, modify, distribute and use the images, even for commercial purposes, all without asking permission and without paying attribution. However, depicted content may still be protected by trademarks, publicity or privacy rights." In as much as people have to actively upload their images to Pixabay this seems much clearer. I've found a couple of interesting images and have signed up. it will be interesting to see how quickly the inbox fills up, if at all!
Just some of the 181 images shown after searching for 'inbox':