<http://schema.org/headline>
"Valve releases Steam for Linux client, celebrates with week-long sale of 50 Linux titles at 50% to 75% off"^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/apps/2013/02/14/valve-releases-steam-for-linux-client-celebrates-with-week-long-sale-of-50-linux-titles-at-50-to-75-off/>