[youtube] video id [/youtube]
You will copy video url from:

For example, if video url is , then the video id is L6Cuq-BueEs, and you should write:
[youtube] L6Cuq-BueEs [/youtube]
The result will be:
Posted 21 March 2009 - 07:59 AM
[youtube] video id [/youtube]
[youtube] L6Cuq-BueEs [/youtube]