I did not realize that it was the first site to use keyword "tags". This is way to link photos and users with similar "tags" or titles. It makes it very simple to search for similar items or browse pictures from a photographer that you like. I can't believe that the site has more than 2 billion images and 20 million tags!! I can see how this would be very useful in higher education. It would be great for students in a specific field to find vrey subject specific images.
The commons is actually where images from the Library of Congress are posted. That is a wonderful wonderful resource.
As a mom I really love how Flickr partners with other companies to provide printed products such as calendars and greeting cards.
Flickr is a great site because of it's accesibility, conveinence, licensing options and various resource tools.
Here is a gorgeous beach picture from the creative commons site.
(By Rene Ehrhardt - "Palm tree at dawn, Patong beach")