Referrals & Affiliates
Word of mouth is a strong channel for this kind of site, and the white-label platform supports it directly.
How it works
Each member gets a unique referral code and link. When someone signs up through that link, the referral is tracked, so you can see who is bringing in new people. You can run it as an affiliate-style program that rewards your most active referrers.
Why use it
Referrals lower your cost of acquiring new members and reward the people who already like your site. The Referrals section in the admin shows the relationships and activity, so you can decide how to reward them.