Qihoo follows Baidu lower

• Qihoo (QIHU -2.3%) is selling off on an up day for equities after search/app store archrival Baidu slightly missed Q4 revenue estimates and offered soft Q1 guidance.
• Baidu blamed its guidance on "the late timing of Chinese New Year this year and mobile's growing traffic contribution, which monetizes at a rate lower than that of PC."
• Qihoo, which is trying hard to narrow Baidu's big mobile search lead and rapidly grow mobile ad sales along the way, is expected to post its Q4 results later this month.