<http://schema.org/about>
"TreeHugger adores product service systems; Though the name is easy to trip over, the concept is brilliant: that there are ways to rent products or services on-demand, and then just pass them on where you're done. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/product-service-systems-puppy-the-world.html>