Yeah I removed it because it actually automatically embedded the youtube video from just my simple link. This could cause some problems so I plan on configuring this a little different. I will keep you posted.
Does your other forums you are subscribed to allow embedding video players? From what I remember undergroundhouse.net does not embed video players or images.
I have a setting in which I can control the image sizes so it doesn't blow out our layout but I could see where video embed code could get nasty and cause all sorts of issues with the layout – so my solution would be to turn off the video. I am going to work on this later.