Flickr mashups

Wikipedia defines a mashup as "a web application that combines data from more than one source into a single integrated tool." Flickr has an open Application Programming Interface (API for short). This means that anyone can write their own program to present public Flickr data (photos, video, tags, profiles or groups) in new and different ways. There's a long list of API methods available to you to work with.
One such 3rd party site I investigated was Airtight Interactive's Flickr Postcard Browser . This lets you browse Flickr's huge image database, by searching for tags (keywords). Flickr Postcard Browser use the real world metaphor of a set of postcards shuffled onto a surface. The image above is the result of a search for the tag "Dr. Evermore", the local artist who makes large scale sculptures from scrap metal.

Flickr

Flickr is an image and video hosting website, web services suite, and an online community platform. It was one of the earliest Web 2.0 applications. In addition to being a popular Web site for users to share personal photographs, the service is widely used by bloggers as a photo repository. Its popularity has been fueled by its organization tools, which allow photos to be tagged and browsed by folksonomic means. (To the right is a tag cloud of the most popular tags used by Flickr users.)

If you're a member of a Flickr group, you can add your photo to the group pool. The easiest way add a photo to a group is to go to the photo's page and click the "Send to Group" button between the photo title and the photo.

Here is a link to a list of library-related Flickr sites: libraries using Flickr.