<http://schema.org/url>
<http://www.businessweek.com/articles/2012-11-28/dick-costolo-twitter-is-a-reinvention-of-the-town-square-but-with-tv>
<http://www.bloomberg.com/bw/articles/2012-11-28/dick-costolo-twitter-is-a-reinvention-of-the-town-square-but-with-tv>