These rules are posted in the FAQ.
I’m wondering why this thread was unpinned. Every once in a while, I’ll wonder “what do the official SDMB rules say about…” and I’ll go looking for the rules in ATMB, only to have trouble finding them until I’ve done some searching.
The latest official rules are now located here:
https://boards.straightdope.com/tos
If you click the Hamburger Menu 
and click FAQ and then click * Terms of Service you get the latest rules.
Also at the bottom of any thread page you should see
Privacy ’ Terms of service ’ About ’ FAQ ’ Tips & Tricks