<http://schema.org/about>
"TreeHugger has always been an advocate for share systems -- things like tool libraries, clothes swaps, car-sharing, and product-as-a-service systems like Netflix. The fewest products possible  shared among the most people is very"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/sustainable-product-design/ted-talk-systems-of-sharing-about-to-revolutionize-consumerism.html>