This is a good idea i think i like the idea so what it is is that when you become member you'll receive notifications from from the user your a member of post it doesn't cost money but it gives the users points and the user your a member of can see all their members.
Also the person the user is a member of can make a icon to show beside the name of the user so when the member comments on their post it shows the icon and if you hover above the icon it will show how long they've been a member.
