Here is what referrals would look like if they were a “symbol”;

Thanks Charles Petzold

Pretty simple, where the intersection takes place is the referral/sharing moment.  The idea being that the referral takes place and the Referrer and the Referee continue on the path and eventual pass and receive another  referral.  Reality is in perfection it is more like this;

thanks Etsy person.

A continually growing chain of infinity symbols that interlock with one another therefore allowing a continual stream of referrals and sharing to take place.  If at some point you choose to cut the loop you hinder the ability to give and  subsequently receive referrals in the future.  Why would you want to do that?  No idea.

Keep the chain going.  Keep sharing.