TeacherTube - a friendlier YouTube?

I have started using TeacherTube lately (that is where Maple Sugar Sunday is residing). I found a video by Vicki Davis's on Fear of Technology posted there. It seems to say what I am often thinking about blocking social networking sites from our students. You can view it here:
http://www.teachertube.com/view_video.php?viewkey=d9fe611d5a8e90fefdc9

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