I recently implemented some custom code that allows you to embed (rather than just link) YouTube videos on any OKCTalk forum.
Here's what you post:
{yt}TMQhxpOjDmM{/yt}
Where:
{} = [] (lower case of same key)
TMQhxpOjDmM = everything in the URL of the video after the equals sign
Here's an example:
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