By the way, is this the right thread to mention that I heard 里心 (the poster child of “no one use that word”) in a casual conversation the other day? NB: the speaker was trying to impress another native of the opposite gender with their huge knowledge (when did that ever work? But that’s another conversation).
I wrecked their effect a bit when they made the mistake to turn toward me and ask me (the poor foreigner) if I knew what it meant. 
JUST for the look on their face, I’d pay another lifetime subscription to WK.
Sure, that’s anecdotal, but life is a succession of anecodtes.