Search Engine of Free, GNU FDL, Creative Commons Images

I'm always wary of search engines for free/public domain images -- I'm always worried you're going to find something useful that's not as free/GNU FDL/PubDom/Creative Common'd as it's supposed to be. But I was reading an interview with the owner of Yotophoto, and when he said, "We have contacted all the sites we index, and all the feedback has all been very positive." I felt a little better...

Yotophoto ( http://www.yotophoto.com ) has indexed over 100,000 images that are licensed under Creative Commons, GNU FDL, are public domain, or various other flavors of free.

I did a search for 28 results. Results show thumbnails of the content, the site from which the image is indexed, the size, and the license under which the image is available. In some cases there's also a link to view the license. Clicking on the thumbnail takes you straight to the page.

Yotophoto also has an advanced search that allows you to narrow your search by both size and license. In this case searching for public domain images of hummingbird gave only three results.

Posted to Searching-Images