User blog comment:Kirkburn/Technical Update: August 17, 2016/@comment-26009167-20160818200127/@comment-26009167-20160818211908

@DEmersonJMFM: I believe "Good edit!" threads are much less spammy than waking up with potentially a hundred "Good edit" notifications in my notifs, just because someone decided that I should have to sort through them to find the notifications that actually matter.

Also, threads about good/bad edits are a lot detailed in how they were good/bad, than just a simple notification.