Has anyone noticed what happened to YouTube, particularily on Firefox? If you try to go to it, in re-directs to an 'app' version that resembles iTunes and everything is flash and streamline and you can't embed anything and it's all auto-play.
It's probably because of all those add-ons that could allow you to download YouTube videos.
This means ur gonna need like google chrome or IE8 in order for embed codes for any YouTube stuff, if I find anything else out I'll keep it on the up and up.