Image search tool - note "restrict your search to creative commons" option
Images provided for the free use of educators and their students.
Online site allowing user to edit images, download back to computer, send to flikr. Free and premium versions.
Secure network allowing a teacher to establish class blog, class image album.
Digital Vault from the National Archives. You must take a look. Tremendous collection and great interface.
Online photo editing system
Amateur Snapper offers hints for digital photography - here 10 composition roles
Google download for Windows users - image storage, organization. Picasa 3 offers support for video and new formats for presenting images.