<http://schema.org/description>
"If you&amp;#039;ve ever caught the giggles from a friend, then you know how giddiness can spread from one slaphappy person to another. But does the same kind of thing happen online?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://computer.howstuffworks.com/internet/social-networking/information/happiness-contagious-in-online-social-networks1.htm>