With the flipped classroom pedagogy gaining traction, teachers are looking for ways to safely allow students to watch videos and ask questions about them.
A relative new comer, Vialogues, might be just the thing.
You upload a video and give people something to talk about
You can make it private
You can scaffold the discussion: Add comments, surveys and open-ended questions. Guide the discussion in the way you want.
Are you using Vialogues with you classes? How is it going?