"The next time that you need to find some high resolution images for a slideshow skip the Google Image search and head over to Every Stock Photo. Every Stock Photo is a search engine for public domain and Creative Commons licensed pictures. When you search on Every Stock Photo it pulls images from dozens of sources across the web."
Via Beth Dichter
http://amecselblog.overblog.com
amecsel.net
What a wonderful source of images plus built in lesson in digital citizenship. I love having to opportunity to discuss both attribution and resolution during an image search.