Could be cool in some ways, but could be distracting too. I like that you can pause it when needed for this reason. This is a tool for hosting backchannel convos in class.
Have you ever wanted to create short "how to" video for your students to use for homework, remembering facts, and solving math problems.
How often have your students stated, "I could not complete the homework assignment, because I could not remember the steps and no one could help me."
Well the answer is to create a screencast or video for posting on your class wiki or blog for students to view at home or anywhere else they have web access.
This is a great example of asynchronous video chatting! You can post a picture or slide, and then hear people's comments---just like you would in class. I think I'll use this for my online section.