<http://schema.org/description>
"How do you create content on the web? Perhaps you upload a photo album to Facebook or write a blog post on Blogspot. That content is your data, right? Kind of. The problem is, the content ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/dd/2011/07/16/creating-a-portable-web-when-your-data-is-truly-yours/>