Viddler in 2008 and I like the site a lot despite the fact that we only get a couple hundred views per video as a rule.
There are a lot of social opportunities with groups and friending, blogging as well as an API, RSS and the ability to send out to iTunes if you choose.
The site has been stable and I see it continuing to grow and offer new things on a regular basis. They seem to have a handle on how to monetize which is important for it to stay operational. They are in beta with HTML5 which makes me VERY happy since we get a LOT of views via mobile phones.
Surprisingly, the videos that have done best have been historical romance, chicklit and paranormal romance.