I think they mean in this thread (older version), so non-hair topics. Sometimes I had no idea what/who people were referring to, for example I have no idea who ~~ is, but that's cool. I can't be in on all in-jokes, especially if they relate to pre-Jo Somebody days (those dark times where you didn't have me poor things!). And even if people are resorting to PMs to discuss them, what of it? Admittedly, I was a little paranoid in here reading posts that made vague reference to idiotic posters who may or may not have been me, but in the end I decided I didn't care.
Anywho, it's probably good for the blood pressure to not know of alllll the trollettes and she-fools who have graced 4a and beyond.