<http://schema.org/about>
"This is a simple, clever idea that you can try for your refrigerator. Hang a piece of clear plastic on each shelf, to avoid cold air escaping when you open the fridge door, which will save some electricity. You could use a shower"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/kitchen-design/would-a-fridge-curtain-save-electricity-or-should-you-just-unplug.html>