I gave it some thought and I figured out that for some reason, PO hasn't made some sort of command that restricts certain words/links that should not be used (I know about the existence of /ctoggleswear, but I've never seen it being used on tohjo, and it's only limited to swearing words). Anyways, the mechanic of the command is very simple; /banword [word/link] (or /bword [word/link]) Example: /banword Fuck You. When the command is introduced, it should display a message like "[Word]" has been banned!". If a player dares to use the word, maybe a message like this should be displayed "This word is banned". The command can be very versatile because you can actually ban phrases that are directed to someone (Like the example showed earlier) without banning the swearing word per se, i.e "Fuck", since one line of swearing is allowed. The command could also be used to block certain links that can contain: Unwanted Advertisement of some well known webpage, inappropiate content (Such as porn websites, a common reason for a permanent ban), and also racial slurs (Like "Nigga"). Note: The command is obviously auth +1 and above only. This command works like some sort of prevention method, I believe it can reduce the amount of players that get muted daily, and can also prevent ackward discussions that often happen in Tohjo.
hint: this already exists That's why the word nigger isn't able to be said Also a bunch of (full) site names are blocked and/or don't link to anything which is as good as we'll get with this without unneededly restricting private channels etc.