Karma
Karma marks who helped carry this early. That's all it is.
The curve
The earlier you sign, the more karma you get. It drops off smoothly as more people join.
Why have it at all
Karma turns millions of quiet signatures into something you can see and share.
The people who carry a movement first take the biggest risk. Karma says thank you.
If billions hold karma and can pass it to each other, value may grow. May. No promises.