Flickr is one of the oldest photo-sharing communities on the web, used by amateur and professional photographers to store, organise and publish their images. It has long supported open standards, including public RSS and Atom feeds for photostreams, tags and group pools. Photos on Flickr can carry detailed metadata, such as titles, descriptions, tags and Creative Commons licences. Many photographers use it as a portfolio or archive while sharing highlights on other networks. Posts under this tag cover how Flickr feeds work and how to use them to distribute new photos automatically.