10% of the rewards of the new member for a period of 30 days.
Most people joining will not make an impact in the 30 first days. It is too short time to make an earning, 365+ days and we have a better starting point. http://1broker.eu offers lifetime referal rewards and they been in biz since 2012.
Please make a better offer. It cost money to bring people to your front end, and 30 days are nothing.
PS: Referal programs are decentralized marketing.
RE: Busy v2.4 Release: New features that will make you love Busy.org