Unfortunate story about flickr deleting a photo because of a false copyright claim. According to the requirements in the DMCA, they had no choice. (this could happen to anyone)
This is not a free site but try the trial and I know you will be impressed. Safari contains every book in the communications tech field that you can imagine. I would use this right in class for tutorials and resources. Give the free trial a try and find any book on almost any topic.
"We scour the web looking for the best photography equipment prices for you. All prices in Canadian dollars, and we understand the intricacies of cross-border exchange rates, duty, and provincial sales tax, so we'll calculate that all for you. Just find the product you're looking to buy and be sure you've found the most accurate and best prices!"
Exploring copyright issues and fair use. An NFB endorsed documentary. The NFB site splits the film into 13 segments...great for on-going classroom discussion!
Zen garden an excellent site to demonstrate the separation of content and design using CSS. The links on the left change the layout without affecting
content. HTML and CSS are downloadable.