Post promotion: 

Previously we are calling it buying a post and now it's call promoting a post but there's a difference in these two in buying a post we get half of the post income but by promotion a post we get reputation points

Reputation points: 

If we promote a post on every view we will get a reputation point, For example if we are promoting a post at 10$ if post get 10 views we will get 10 reputation points

Benefits of promoting own post? 

Yes we can promote our own post and earn some reputation points from it as well but I didn't understand what's the benefit of earning these reputation points?? 

Because meta bbs is only demanding quality content and contribution towards the board and than they will make you their partner members

But some members are still focusing on earning more and more reputation points I didn't understand what they are going to do with these