<http://schema.org/url>
<http://thenextweb.com/apps/2010/09/24/what-catches-attention-on-your-site-get-a-clue-with-clue/>
<http://thenextweb.com/apps/2010/09/24/what-catches-attention-on-your-site-get-a-clue-with-clue/>