<http://schema.org/url>
<http://www.businessweek.com/articles/2013-03-11/the-future-of-online-etiquette-is-already-here-its-just-unevenly-distributed>
<http://www.bloomberg.com/bw/articles/2013-03-11/the-future-of-online-etiquette-is-already-here-its-just-unevenly-distributed>