YotoPhoto - it's a weird name but it's an awesome resource! Have you ever been working on a project and needed a reference image. Maybe you needed a color pallette, a background reference, or just some stock art for details in your textures - you can find all of these at YotoPhoto.
YotoPhoto is a web resource for finding copyleft photography. It's far from a stock photography resource in quality and imagery but a good resource for free to use images. The images are linked to from other sites which makes it a powerful search tool and the average resolution is good enough for textures and references.
Check it out for yourself: