Tech stocks took a beating on Wednesday and many are down even further on Thursday. 

Why is the sector sliding so much, and what should anxious tech investors do now? TheStreet's tech columnist Eric Jhonsa and Action Alerts Plus Portfolio analyst Zev Fima weigh in on the sector's challenges and how you should be thinking about some of the most beaten-down equities, including Amazon.com (AMZN) and Chinese internet giant Alibaba (BABA) .