http://sn.1w6.org/file/bobjonkman-20140220T065752-erw5mr3.html
/me doesn't understand what WhatsApp is: "WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Windows Phone, Android and Nokia." So, just like !XMPP, only closed and proprietary?