Take a tour of Flickr.

Taken by iSock (from here under terms)
Creative Commons and Appropriate Usage
Many Flickr users have chosen to offer their work under a Creative Commons license, and you can browse or search through content under each type of license.
This license allows for educational use of over 30,000,000 photos! Depending on the
license, you will be able to copy, distribute, display, and perform the work subject
to giving the creator credit (attribution) and noncommercial purposes use only.
For more details of the various license types under Creative Commons,
and to search for photos under a particular type, start here.
If a photo has 'All rights reserved', you can still contact the photographer to ask permission to use it (you will need to create a Flickr account to do this).
Photosharing and educational use
Read a two-page overview from an educational perspective: 7 Things You Should Know About Flickr (Educause article).
Short Video: Online Photo Sharing in Plain English (by The Common Craft Show)
Previous Sites of the Month
November - OpenLearn
The OpenLearn website gives free access to course materials from The Open University.
Areas include study skills, engineering, maths, science, IT, business, law, and languages.
These can be hyperlinked to or downloaded, adapted and embedded in your Blackboard site.
October - The Common Craft Show
A good source of short videos, including topics such as wikis, blogs, social bookmarking, twitter, RSS and more.