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"Facebook is off over 7% today, at the time of writing, with its stock valued at $29.42. That puts the total value of the company at nearly exactly the $63 billion mark. For investors ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/facebook/2012/05/29/as-facebooks-stock-slides-the-value-of-its-instagram-deal-falls-below-1-billion/>