<http://schema.org/description>
"Talk about making a point, Hacker News (a service of YCombinator) has just blocked every search engine from indexing their website. Want proof? Take a look at this:\r\n\r\nBy blocking robots ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2010/03/16/hacker-news-banned-google-search-engine/hacker-news/>