Every bit as powerful as the original Dove Beauty campaign that first put viral video on the map (at least to me).

The use of overlayed images throughout the video is impressive – and I wonder how long it will be before custom audio can be inserted without seeming out of place. Not long I expect.

You'd never get that level of personalization on any other medium – and that means that marketers will increasingly turn to online video to tell their stories.

The risk is that without the deft handling that evident in this case (a call to action) or the Dove example (brand building) that online video will lose a lot of its cashe.

Still as an example of what is possible – and how it can affect outcomes – this is incredibly effective.