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Flickr is a photo sharing website and 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 innovative online community tools that allow photos to be tagged and browsed by folksonomic means. It hosts over 2 billion images.
Flickr asks photo submitters to organize images using tags (a form of metadata), which allow searchers to find images concerning a certain topic such as place name or subject matter. Flickr was also an early website to implement tag clouds, which provide access to images tagged with the most popular keywords.
Organizr is a web application for organizing photos within a Flickr account that can be accessed through the Flickr interface. It allows users to modify tags, descriptions, and set groupings, and to place photos on a world map (a feature provided in conjunction with Yahoo! Maps). It uses Ajax to emulate the look, feel, and quick functionality of desktop-based photo-management applications. Because of this, Organizr simplifies the batch organization of photos, which is more cumbersome with the normal web interface.
-->Flickr provides both private and public image storage. A user uploading an image can set privacy controls that determine who can view the image. A photo can be flagged as either public or private. Private images are visible by default only to the uploader, but they can also be marked as viewable by friends and/or family. Privacy settings also can be decided by adding photographs from a user’s photostream to a “group pool”. If a group is private all the members of that group can see the photo. If a group is public the photo becomes public as well.
Flickr’s functionality includes RSS and Atom feeds and an API that allows independent programmers to expand its services.
Images can be posted to the user’s collection via email attachments, enabling direct uploads from many cameraphones and applications with email capabilities
With an active free account, each user has access to only the most recent 200 images he or she has uploaded. Older images are not deleted, and are still accessible via their URLs (e.g., linked from another website); however, while they are no longer directly accessible to tag or edit from the user’s Flickr account, if a user has the full URL, it is possible to perform most basic functions. Free accounts which are inactive for 90 consecutive days are automatically deleted.
[via: wikipedia]
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