I noticed that in the comments/answers to that post, people were referencing publishing manuals, if not their own personal knowledge/experience. I seem to remember that that precise topic was covered by ye olde (now 5th edition) Strunk and White.
My mom was a college English teacher for some time, and one of her more everyday references (she also used the publishing manuals for, say, research papers--her own and her students') was Strunk & White. Is this not so influential anymore, that people (at least in this comm) don't seem to be using it?
Just a random question :)
ETA: Thanks to everyone for so many helpful comments (though as a longtime lurker here, I wasn't expecting much less ;)! And sorry, I should have clarified that I was referring to American English. Happy ::insert preferred holiday here:: to all!