Channel & Playlist Url Examples:
  https://www.youtube.com/channel/UCAuUUnT6oDeKwE6v1NGQxug
  https://www.youtube.com/user/TEDtalksDirector
  https://www.youtube.com/playlist?list=PLOGi5-fAu8bGExh18mDFl-EFUcavUX8pV

• Introducing Active Synced Lists for YouTube.
• We keep lists synched with your channel/playlist, so you only need to create it once!
• Be sure to visit your list here from time to time to monitor click stats.
• Your list URL stays the same, so you can safely put it on all your videos.
• Never again will you have to select and gather links manually to keep viewers engaged.
• To maximize click-through, place URLs near the top of your description area.