1) Take the letters/numbers after the "=", copy and paste [ame=http://www.youtube.com/watch?v=O5VMZQsMIME]Kunitz finishes off dish from Crosby - YouTube[/ame]
2) Put the youtube tags between "O5VMZQsMIME"
3) You have this:
EDIT: I guess you can do it either way, posting the full link or just the letters/numbers after the =