flickr.com/services/feeds/photos_public.gne?tags=tree&format=atom
shows that Atom 1.0 is natively able to encode much of the information for which Media RSS
is being used in RSS 2.0. The Atom feed does, however, use a Dublin Core extension to mark
up a date.
Exchange Formats Other Than RSS and Atom
Let??™s now return to the feed formats supported by Flickr other than RSS 2.0, RSS 1.0, and Atom 1.0.
To get a start at understanding the various formats, load a Flickr feed, which will by default be
in Atom 1.0, and replace the format parameter with the alternatives. For instance, if you are
curious about CDF, change the following:
http://api.flickr.com/services/feeds/photos_public.gne?tags=tree
to the following:
http://api.flickr.com/services/feeds/photos_public.gne?tags=tree&format=cdf
CHAPTER 4 ?– WORKING WITH FEEDS, RSS, AND ATOM 90
In the following sections, I??™ll mention some but not all of formats supported in Flickr feeds.
RSS 0.91 and RSS 0.92
Although RSS 0.91 and RSS 0.92 have largely been superseded by RSS 2.0, you can still look at
examples such as this:
http://api.flickr.com/services/feeds/photos_public.gne?tags=tree&format=rss_091
and this:
http://api.flickr.com/services/feeds/photos_public.gne?tags=tree&format=rss_092
to see how those older versions do not contain any of the Media RSS or Dublin Core extensions
you find in the RSS 2.0 feeds.
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