On my Facebook page where I have 14 "friends" I do it every post I make, no matter the size.
I leave my post or comment up for 2-3 days if it gets no responses or reactions I delete it.
Then about every 2 months I go through my history on FB and I delete every post I missed.
If people don't care about what I have to say or my thoughts and feelings enough to give me a thumbs up then I guess I didn't need to say it after all.