<http://schema.org/description>
"I used to do a video podcast, so I know how difficult it is to make everything look as professional as you want it to be when you upload it to YouTube. A nice feature of YouTube's playlists ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/google/2012/08/23/youtube-makes-easier-video-creators-tell-story-new-intro-outro-feature/>