<http://schema.org/about>
"Well, it's official: Twitter is everywhere. Yup, looks like the swine flu pandemic has forced yet another strange event to unfold: it's gotten the White House to officially join the Twitter frenzy. At time of writing, it's got only 900 or so followers."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/corporate-responsibility/swine-flu-forces-white-house-to-join-twitter.html>