<http://schema.org/description>
"Over time you really want to vary the content you give to viewers. Unless you're an absolute knockout or you have some additional material (visual graphics) to share with people that have tuned in, the talking head style is mostly outdated. There are exceptions to every rule of course..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://famousbloggers.net/audio-video-podcast.html>