ookaboo is a new site for free images.
Paul Houle, its founder, writes:
Although I started it just last July, Ookaboo already has 510,000 images of 283,000 topics… and it gets better all the time because it adds 8,000 new images each day. Unlike many “free photo” sites, all images in Ookaboo are public domain or creative commons and can be used freely for both commercial and non-commercial purposes. I think it’s perfect for students and teachers to use for schoolwork, handouts, web sites and other creative projects.
I’m adding it to The Best Online Sources For Images.