<http://schema.org/description>
"Social analytics service Topsy has announced that it now offers the full archive of tweets on Twitter, meaning that anyone can search through the entire library of messages ever sent ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2013/09/04/social-analytics-service-topsy-now-lets-you-search-through-every-tweet-ever-sent-on-twitter/>