<http://schema.org/about>
"TreeHugger likes biodiesel a lot. We're glad to see that it's been getting some increased press lately, but we can't promote it all by ourselves, so we're always happy when celebrities and other high-profile people put their time, passion and names"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/treehugger-picks-biodiesel-buying-celebs.html>