\n\nCitibank is running a referral program where existing mortgage customers can refer friends and family for mortgage loans. The referrer will receive rewards based on the size of the loan received by their referral. Rewards range from cash prizes to electronics such as an iPhone, iPad, Blackberry Curve or Apple Macbook. To participate, referrers fill out a referral form with contact information and the potential borrower must receive a loan over certain thresholds for the referrer to receive different prizes. The offer is only valid until December 31, 2010.