Referral Abuse Guardrails Define the guardrails that stop end customers from gaming a customer refer-a-friend program, and deliver them as a guardrail spec: rules with thresholds, verification gates, a reward-hold policy, an enforcement ladder, and monitoring signals. This skill protects whatever reward structure already exists - it never redesigns it. No ratified standard covers consumer referral abuse. Borrow exactly four things, nothing more, and only as a mental model, never as a compliance claim: - GIVT/SIVT shape (ad-measurement standards): a cheap deterministic tier plus an expensive c…