The link in embedded youtube videos are to ww.youtube.com (notice the missing 'w' in www). I'm not sure how to get this to the board management, but hopefully someone that sees it can do something about it.

See the link in this thread for an example. http://www.cnczone.com/forums/showthread.php?t=76912 If you click on the header in dark blue that says "YouTube - DIY CNC Rapid demo" the destination URL is missing the 'w'.