Vblogging to traffic

I've come across a new site recently (new to me anyway!) Rocketboom , where the only content is video blogs on current and not so current affairs.

It a fantastic example of using a new a medium to get your message across.

Its a new medium, but still is reliant on people to make to work, but the difference in cost of producing these video blogs to creating a similar video for TV must be huge?

All you need is a web cam and away you go!

Question - are pod casts as effective as vblogs?

Depends on whose behind the camera...