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I'll reply, because you're too stupid to get it on your own.
Post the comment, video, whatever ONCE, then copy the link to your comment. Post that link wherever you wish.
One message -- one or more links back to that message.
What you are doing is SPAMMING the forum. Once is enough.
Simple. Proper. Even a troll can do it!
When you Spam multiple threads, the replies get spilt up into different threads, too. I guess you think they ought to cross-post their replies, too?
One message -- one place to reply -- one discussion thread.
OMG -- why does an IT guy not get this?