Did you concerned about how they are performing. Check they are posting any articles or not. Unless they post any articles, complaining here will not do any good.
When opportunity is in front of you, don't hesitate to catch it. It will never come to you again. - Maverick
I don't agree with your views. Unless a member contributes something to the site, it is not correct to give referral amount as the site has not got any benefit from the new member.