What is the ID number for?

I know that you see the ID number next to your name on the family tree but I was still wondering how the number is useful and why people put them on their posts sometimes. It also doesn’t seem able to identify anyone unless you were in that family because they are different each life.

I think it is for cursing. You know by tapping something very long , you can curse the griefer. Name might be ok , but sometimes there will be some people with the same name in the village. Thus , I concluded it is for cursing and it is easier for the developers to track such people if they somehow mess with the game with cheat .


Ah ok I see, thanks for answering!