Just Know About Ecency Point System

Hello Friends,
I'm Policewala and this is my first post on ecency app and i'm inspire with that kind of beautiful and fast processing app. I have a simple question hope you guys can help me, I want to know what is ecency points and what is benefit if we are earn or purchase through HIVE or HBD because i don't understand what is truly benefit if we earn ecency points at this platform thank you. Guys you can write comments to answering me.