<http://schema.org/description>
"There were rumors abound as to why microblogging site Tumblr went down for about 24 hours and most of them were centered on the folks over at 4chan. Turns out, at least according to ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2010/12/07/tumblr-explains-why-it-went-down-for-24-hours/>