This is a video from Zennie Abraham. He has definite thoughts about what is videoblogging. Now gather five people in a room and you will have a vigorous discussion of what is, isn't and can be considered videoblogging.
I don't agree 100%, more like 67.38%. He has is a valid point of view but it leaves out the activists, the resource vloggers and folks that use video to support their creativity and passions that do not call themselves videobloggers.
For more info on Zennie you can visit his YouTube channel or his blog at http://zennie2005.blogspot.com/