Is it possible we a getting new notifications, on a different day, when there had been a system edit - to replace an image, for instance?
I got a quote notice recently (last few hours) on a quote from yesterday - and I was notified about the quote yesterday. I do see the post has been edited.
https://bbs.boingboing.net/t/how-can-women-disrupt-male-speech-domination/74908/194