I have recently discovered the wonder of StumbleUpon.com and might I say, it's wonderful. I've collected 120+ favorites in the past couple weeks I've used the site, and feel it's only right to share my findings here. http://www.blogherald.com/2008/10/06/5-sources-for-free-and-legal-images/comment-page-1/ This blog post goes over 5 free tools for acquiring images you can use on your site/posts. Enjoy, fellow DigitalPointers!
www dot corbis dot com is really useful and beautiful. my professor used to tell me when I am sophomore. Most of my website project came from there.