<http://schema.org/description>
"Since Tumblr integrated with Open Graph last month, its referral traffic from Facebook\u00A0has grown by more than 2.5x, according to\u00A0Jeff Sherlock\u00A0of\u00A0Facebook's Developer Blog. This\u00A0statistic\u00A0makes ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/socialmedia/2012/05/17/since-tumblr-integrated-with-open-graph-last-month-traffic-from-facebook-is-up-2-5x/>