php-loep/oauth2-client — pull request #19 by bitinn (2013-09-10 16:23:19+00:00)
Title: Add sina weibo oauth provider

http://en.wikipedia.org/wiki/Sina_Weibo

300 mil users (2012 stats), largest microblogging platform in china.

Their api response are cluster-f*ck, but this should help to ease the pain a bit.