I will add that something like that can be occasionally useful. The ping basically can be ignored - I am already aware that I posted the message, so it does not really matter that I am notified about this But in this way I get also a little arrow at the beginning of the message - this might be useful for other users reading the message; in this way they get to see the context and they can easily find the message for which this is a follow-up. — Martin Sleziak Aug 23 '18 at 15:00