<http://schema.org/description>
"According to Visibli, a social media marketing and analytics company, artists like The Smashing Pumpkins and companies like Zagat are using its services such as its &amp;quot;Engagement ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2011/05/18/visiblis-new-sneak-peek-is-like-google-analytics-for-twitter/>