I see, thanks.
It appears that you're using Hal that is connected to the CLOUD instead of a "local only" instance.
Makes sense now and what I believe that to be is the lightbulb to allow you to agree that the message was good or on topic.
I'm not sure whether it affects how HAL learns or if it allows that information to serve as a reinforcement to its brain file.
The reason I've never seen it is that the majority of my Hal usage is Local.
Hopefully, Robert or someone who knows for sure will weigh in on this topic.