Enter a Playlist ID, or a YouTube username to get that user's uploaded videos, or a YouTube username to get that user's favorites.
Keep in mind the favorites list is limited to the first 20. This is a limitation of the YouTube API.
The others are limited to 100, also a limitation of the YouTube API.
NOTE: YouTube's documentation says the playlist should have a limit of 100,
but it apparently ignores the parameter and only returns 20. I have logged
a support request with YouTube on this.
Name and Description are optional, but will show up as labels for the RSS feed.