Sina (SINA -3.5%) is slumping ahead of this afternoon's Q4 report, thanks in part to a selloff...

|About: Sina Corporation (SINA)|By:, SA News Editor

Sina (SINA -3.5%) is slumping ahead of this afternoon's Q4 report, thanks in part to a selloff in Shanghai.  Weibo monetization will once more be in focus, as will the company's suddenly aggressive mobile push. Shares cratered in November thanks to the guidance provided with Sina's Q3 report, but subsequently rebounded.