<http://schema.org/url>
<http://gigaom.com/2013/07/30/when-it-comes-to-free-speech-twitter-is-caught-between-a-rock-and-a-very-hard-place/>
<http://gigaom.com/2013/07/30/when-it-comes-to-free-speech-twitter-is-caught-between-a-rock-and-a-very-hard-place/>