<http://schema.org/description>
"It&amp;#039;s taking over the world 140 characters at a time. Some people use it to gather news. Some treat it as a race to get the most followers. It&amp;#039;s Twitter, but how much do you know about it?"^^<http://www.w3.org/2001/XMLSchema#string>
<http://computer.howstuffworks.com/internet/social-networking/networks/twitter-quiz.htm>