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The embed process requires premium account since the embed code is more than 250 characters. Premium gives up to 1000 character typing.

Then it is a matter of grabbing the embed code from the youtube video and simply pasting it into the thread. I will do a tutorial on this tomorrow.

Posting a link from YouTube or 3Speak might work at the secondary level but it gets a bit wonky, especially with other links under the same threadstorm

Clearly, I still have a long way to go :)