<http://schema.org/description>
"The lifeblood of many local businesses is word of mouth. Online social networking sites like Yelp simply make it easier for people to spread the word about their experiences -- good and bad alike."^^<http://www.w3.org/2001/XMLSchema#string>
<http://computer.howstuffworks.com/internet/social-networking/networks/yelp2.htm>