<http://schema.org/description>
"Twitter looks like it is putting Summify, the social feed summary tool it acquired in January, to use after a new service that recaps the most popular stories from users' timelines ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2012/04/24/new-twitter-email-summaries-may-be-the-first-sign-of-summify-at-work/>