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Re:4Chan Is Turning 15–And Remains the Internet's Teenager by krapp on Saturday June 02, 2018 @12:18PM (#17215178)
>There are things called containment boards on 4chan for a reason.

I don't think there actually are, in practice.

How do you have any sort of "containment" on an anonymous forum? There's nothing at all stopping /b/ and /pol/ from stepping into any other board and either playing along or not. The only containment there is a state of mind.

Re:4Chan Is Turning 15–And Remains the Internet's Teenager by verylittlemeat on Saturday June 02, 2018 @08:50PM (#17217280)
They do work though. Typically a board like /g/ is on topic and containment boards are used to shame offtopic users. That might sound unconvincing and "a state of mind" but social dynamics do work. If there is 1 /pol// shitposter in a thread they will be called out as bait or told to go back to their containment board. It's a useful rhetorical tool on 4chan and it works better than any literal rule because it comes organically from the board's culture.