Key findings:
- The market grew by an estimated 70% in 2007.
- It's estimated YouTube added 831,147 videos to its library in 2007 (net of all video retired or removals
- Crackle.com was the market leader in generating views per video at 216,596, accomplished by emphasizing professional content
http://www.accustreamresearch.com/products/ugv2005-2008.htm