@Mal
In support of adding youtube, the video neither autostarts, nor autobuffers, forcing no one to watch or waste bandwith for a video no one wish's to see.
Please see this link for an example of how the video looks and acts in a thread.
Personally I think its no worse than an extra large picture in a thread.
http://www.geekpoint.net/forum-admin...vbulletin.html
The video is 3 or 4 posts down.
So merely my opinion, I don't make the big bucks or run things.