<http://schema.org/description>
"Chinese Internet giant Sina has grown its Weibo microblogging service past 400 million registered accounts, but it acknowledged competitive pressure from rival Tencent's WeChat messaging ..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://thenextweb.com/asia/2012/11/16/sina-books-152-million-in-q3-revenue-as-it-faces-tough-competition-from-tencents-wechat/>