<http://schema.org/about>
"\nDear Pablo: Why should I turn down my water heater? Isn't it just as efficient to dilute really hot water with cold water in the faucet than to use barely warm enough water straight out of the hot side?In a strictly theoretical sense you are correct."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.treehugger.com/clean-water/does-turning-down-my-water-heater-really-make-a-difference.html>