Well I've seen lots of people that are having trouble with working the youtube tags so I made a little tutorial.
When using the youtube tags:
Insert the last letters of the url of the video in between the tags:
e.g.
You would take the "EH5oRJKTWuc" (without quotes) and put it between the youtube tags.Code:http://youtube.com/watch?v=EH5oRJKTWuc
End Result
(without spaces and quotes)Code:["yt"]EH5oRJKTWuc[/"yt"]
[yt]EH5oRJKTWuc[/yt]