Flickr
is a photo sharing website and web services suite, and an online
community platform, which is generally considered an early example of a
Web 2.0 application. 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 innovative
online community tools that allow photos to be tagged and browsed by
folksonomic means. Flickr has a repository that is quickly approaching
1 billion images (as of August 2007).