As it is we have two forums where staying on topic is mostly not a thing.
Miscellaneous and Personal Stuff I Must Share & The BBQ Pit
With the exception of breaking-news which often has the strongest stay on-topic requirements. Even the pit has two threads, where we Mods will often break out the hijacks. The Trolls R Us Resurrections & What were you THINKING? threads.
Loose standards for In My Humble Opinion & Cafe Society
In Factual Questions you need to stay on topic until the question is answered and usually explored, but then drift is allowed.
Great Debates & Politics & Elections are stay on topic and no omnibus threads allowed.
About This Message Board is suppose to stay on-topic and not argue stuff from other threads, but moderation is light.
Crap hit reply too soon:
So what I think I’m saying is it is often hard to remember which forum you’re posting in or which rules apply. This is why, if the poster is not a serial hijacker, we try not to do more than a modnote and maybe hide the off-topic post or move a hijack to its own thread.
And remember: we encourage the sharing of anecdotes and opinions but as a new topic instead of a hijack.
If you are responding to something in a thread that is basically off-topic or likely to lead to a hijack, try this:
How to Reply as a linked Topic:
Click Reply, in the upper left corner of the reply window is the reply type button, looks like a curving arrow point to the right.
Choose Reply as linked topic and it starts a new thread. As an example, you can choose GD, IMHO or The Pit for it.
That is actually the best method.