<http://schema.org/description>
"Twitter appears to be testing a dedicated WhatsApp share button inside its mobile apps. A number of screenshots, mostly from users in India, were tweeted earlier today showing the experimental ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/twitter/2014/06/24/twitter-testing-dedicated-whatsapp-share-button-inside-android-app/>