Syndication: Difference between revisions

Revision as of 22:03, 10 March 2006

License statements may be included in various synication formats, generally at the feed and item level, where the latter overrides the former.

RSS 1.0

http://web.resource.org/rss/1.0/modules/cc/

RSS 2.0

http://backend.userland.com/creativeCommonsRssModule

Atom 1.0

http://ietfreport.isoc.org/idref/draft-snell-atompub-feed-license/

Licensed Content Discovery

Not all feeds include license metadata. Heuristics for discovering licensed content. Perhaps useful in particular for aggregators:

IF feed item contains license reference or feed contains top level license reference

 * THEN content in feed (including images and enclosures) probably licensed

Crawl feed item URLs.

 * IF license found for feed item URL (e.g., rel="license")
   * THEN content at feed item URL probably licensed
 * IF license metadata found specifically for media (e.g., about an image or video URL)
   * THEN that media is probably licensed

Download content referred to (e.g., in enclosure)

 * IF content contains reference to metadata on the web that says content is licensed, content is probably licensed (see Embedded Metadata

This is obviously just a sketch. Aggregators may wish to use different heuristics for different feeds. See Content Curators for some sites with feeds of CC licensed content.

This article is a stub. You can help the Creative Commons by expanding it.

@@ Line 1: / Line 1: @@
-License statements may be included in various synication formats.
+License statements may be included in various synication formats, generally at the feed and item level, where the latter overrides the former.
 == RSS 1.0 ==
@@ Line 15: / Line 15: @@
 == Licensed Content Discovery ==
-Not all feeds include license metadata. Heuristics for discovering licensed content. (forthcoming)
+Not all feeds include license metadata. Heuristics for discovering licensed content. Perhaps useful in particular for aggregators:
+* IF feed item contains license reference or feed contains top level license reference
+  * THEN content in feed (including images and enclosures) probably licensed
+* Crawl feed item URLs.
+  * IF license found for feed item URL (e.g., rel="license")
+    * THEN content at feed item URL probably licensed
+  * IF license metadata found specifically for media (e.g., about an image or video URL)
+    * THEN that media is probably licensed
+* Download content referred to (e.g., in enclosure)
+  * IF content contains reference to metadata on the web that says content is licensed, content is probably licensed (see [[Embedded Metadata]]
+This is obviously just a sketch. Aggregators may wish to use different heuristics for different feeds.  See [[Content Curators]] for some sites with feeds of CC licensed content.
 [[Category:Developer]]
 [[Category:Metadata]]
 {{stub}}