Yes and no...
If the video is a how-to do a game-breaking glitch (which you shouldn't be posting anyways), and shows who the person is that's doing it, then don't post it, because, as the rule states:
Do not make accusations of another person, whether they are a member of MabiNation or are not. This includes accusing others of scamming and modding, regardless if you have proof or not.
If you have a video about people saying that they're going to crash the server, then if you can, edit the names out, then you can post it as "evidence" that the server might crash. If not, try not to post it, and instead link to it, though don't be surprised if the thread gets locked/deleted if it becomes nothing but attacking the player that's giving off the warning.
And Chihaya, I understand, but we tried this out before on Guru when we had a stickied thread for nothing but accusing other members with proof of scamming, and another one listing all of the people that were proven to be scammers. However, it just brought about too much drama because of similar names/people defending the scammer saying it wasn't them, and just nothing but a thread made to attack people that can't defend themselves as it is.
It's no different than threads about people that have been banned. We don't want to take the risk about people attacking others behind their backs, insulting them, and just being nasty towards them. It isn't fair for them since they can't defend themselves, but it's fair for us to turn into trolls to retaliate/insult them?