<http://schema.org/about>
"It's pretty easy to find greenies on social network sites like Facebook and Twitter, but if you want a community that is specifically geared towards getting green-minded people together, you might want to check out the new website CoolTribe. CoolTribe"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/green-social-networking-at-cooltribe.html>