<http://schema.org/url>
<http://thenextweb.com/twitter/2011/07/27/why-unfollowing-is-a-good-thing-and-why-you-should-make-lists-on-twitter/>
<http://thenextweb.com/twitter/2011/07/27/why-unfollowing-is-a-good-thing-and-why-you-should-make-lists-on-twitter/>