YouTube Feeds:
YouTube has never offered too many feeds and they were usually difficult to find. The new YouTube API changed that, but the feeds are still inaccessible from the interface. This why I decided to compile a list of the most useful YouTube feeds you may want to add in your favorite feed reader:
1. Search feedshttp://gdata.youtube.com/feeds/api/videos?orderby=updated&vq=mapreduce(replace mapreduce with your query)
2. Search in a categoryhttp://gdata.youtube.com/feeds/api/videos/-/Film/?vq=michel%20gondry&orderby=updated(Film is the category, while michel gondry is the query - you need to replace the space with %20. Other categories: Music, Comedy, News, Sports, Autos, Howto.)
3. The latest videos from a channelhttp://gdata.youtube.com/feeds/api/users/radiohead/uploads?orderby=updated(replace radiohead with your channel)
...or only the videos that match your keywords:http://gdata.youtube.com/feeds/api/users/radiohead/uploads?orderby=updated&vq=jigsaw
4. Feeds for favorite videoshttp://gdata.youtube.com/feeds/api/users/lonelygirl15/favorites?orderby=updated(replace lonelygirl15's favorite videos)
5. Your subscriptionsThis is not a feed that comes directly from YouTube, it's a Yahoo Pipe.http://pipes.yahoo.com/pipes/pipe.run?YouTubeUsername=lonelygirl15&_id=28303b479f11e24199be4cafced31ad9&_render=rss&itemLimit=20(concatenate the two lines and replace lonelygirl15 with your username)
6. Playlistshttp://gdata.youtube.com/feeds/api/playlists/50653251EDB4E764(the code in italic can be obtained from the playlists's URL (e.g.: Eric Speaks)