The referral overlay is Buzz’s referral mechanic: referrers earn 10 to 20% of the exact points their referred users earn, credited from the same bucket the points were earned in. Referral bonuses activate only after the invited user passes a minimum activation gate, and campaigns can cap referral-derived points to limit Sybil clustering.
Crediting from the same bucket is what makes it an overlay rather than a separate lane. Referral points follow wherever the referred participant was active, so they settle at that bucket’s value-per-point.
The activation gate is the defence. Because nothing pays until the invited participant does something real, inviting dormant accounts returns nothing, which is the same problem a Sybil attack presents approached from the referral side.
