I think it's ahead of it's time.. not enough people have fast enough connections to upload/download full videos. Only people who would even be a little interested in it would be the audio people. So maybe a fraction of the audio heads would want to do video, which wouldn't leave much.

As for hosting, if the demand was there, I wouldn't have a problem hosting it.. I've done video downloads before on servers pushing over 20mbit/s or 100+ gigs per day before