Self-explanatory
I will gladly help lift you up over the crowd with this suggestion! can you see? what do the seem to respond? 
It would also be interesting to see the item icons to make it even easier to get the trade idea just by a quick look.
or also have different icons for different popups. I think the trader, merchant, town promotion, red kiln goblin has the same speech bubble icon.
These are good ideas. I’ll poke @Sweet to have them in mind for when we rework the notification system, whenever that is.
I’ve written this into a ticket in the backlog just so I don’t forget when the notification update comes up. Thanks!