I mean think about it. Here I a sitting and writing this post comfortable in the knowledge that unless you ask me directly, you dont know my complete name, have never posted a snap of myself, and you definitely have no idea which company Im working for. (I hope all that is true, else youre good at finding stuff out - do let me know!)
and here, in vblogging, not only do you talk about stuff, you capture your video for the world to see. You need to be an extrovert, extremely confident of yourself (not just looks here) as well as somewhat narcissitic. And, you need to be someone rather fond of publicity. Not all bloggers want to be famous. Especially those who keep journals. Right?