<http://schema.org/about>
"Here is a pretty cool idea that holds a lot of potential for being green and effective, and yet is using already-out-dated technology that strips it of that status. "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-technology/going-paperless-isnt-always-green-supermarkets-swapping-price-tags-for-lcds.html>