<http://schema.org/about>
"When it comes to the way we procure the goods we use in our lives, there are some mixed messages out there. Buying local is advertised as a green way to go -- and it can be -- but so is acquiring"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/culture/online-shopping-vs-driving-to-the-mall-the-greener-way-to-buy/page2.html>