Method 2:
Go to youtube.com fined out your favorite video..
In Right side of the page you will find Embed as shown in image below.
When you will clcik on the box below the Embed it will automatically select. And Now Copy this code and paste it in the message of your Thread..
And submit the Thread./.
Examle:
HTML Code:
<object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/QsYB7EG3nlU&hl=en"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/QsYB7EG3nlU&hl=en" type="application/x-shockwave-flash" wmode="transparent" width="425" height="344"></embed></object>
Copy this code and paste it in your message..
Note: Every video in Youtube.com have their own code..