Here is our tube site
youngertube.com that was completely fed by tgp/tube type traffic. The site was started from nowhere and only fed traffic by our other tgps. Very little time and effort was put into it. While we are not getting rich off it, it shows that short clips do sell, a tube can be grown out of tube/tgp type traffic, legal content can be used and it was pretty easy to make. The
nubiles tube script was used on the script.
Here is the alexa versus our tgp schoolthumbs.com
Obviously these sites are tiny compared to the big tubes, but the model works.