<http://schema.org/description>
"Twitter's latest private market valuation of $9 billion, as pegged by a large investment from the BlackRock Group, turned heads. Is the valuation fair? And if so, what is the math behind ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/insider/2013/02/27/twitter-worth-10-billion/>