Reputation system on forums.

I didn't quite understand how reputation system works on forums, would love if somebody explained it to me.

For each person that likes your post, your reputation score rises.

There is a heart on the bottom right corner of each post, by clicking on it you contribute to the poster's reputation. 

Thanks!

The reputation rises if someone clicks on "thanks" and "haha" smileys too, in the reaction panel down to the right.