Does aMember have a referral module or functionality to allow members to refer the website/membership to others for rewards? What I'm thinking is the type of auto generated emails that would be sent to a list of emails the member enters. If any of those referrals sign-up, the member would receive credit back. Perhaps this would be the affiliate module, but I'm thinking more of "get a free" month type of reward for every new member referred, instead of a cash based reward.
We have simple plugin which works along with affiliate program and allow to add bonus subscription to user when he bring defined number of referrals. Also we have reward-points module, but unfortunately it is not linked to affiliate program yet. That module allow to add reward points to user when he purchase something, user can use these points later on the site.