It is fair to say that there is no better satisfaction for a professional service provider than being contacted through a referral source. Sometimes the most unlikely contact can deliver a lucrative and once in a lifetime mandate. Referrals are particularly effective when there is potential for reciprocation. To increase your appropriate rate of return, build a healthy network, and treat and value each relationship as a potential referral source. A key to your success is to stay attentive to these efforts.