I gotta say, I really like this. It brings the CPC model that works in text link ads directly to video, is pretty well implemented, and is unobtrusive. Brightcove has a similar adbar but theirs is graphical. The brightcove one might be more likely to generate clicks as its always present/visible (unlike invideo which hides itself), but I think users would prefer invideo’s solution in the long run.
The real question is, can they get a high enough CTR and CPC price to make delivering the video profitable? Also, the one glaring question that isn’t answered who is paying for the bandwidth? Video delivery is expensive unless you go and get TONS of bandwidth at a time. Look at youtube they were spending millions a month on bandwidth.