You can determine how good a referral is by whether it meets the CARE elements of a good referral. These are:
C (Consent) – although many referrals are given blindly, they are only useful if everyone involved does it willingly. In some cases, referrals can lead to inappropriate connections
A (Actual) – a real opportunity must exist
R (Relevant) – a connection must be relevant for all parties
E (Exit and Evaluate) – the referrer will disappear from the transaction once the connection is made