On my hosting account at Hawk Host I have a referral/affiliate link. I like to send this link to clients so that when they sign up for the service(as I highly recommend it), they get a great deal, and I get some rewards. I haven't unlocked anything yet, but it will only take a few more clients before I get some nice deals 
Do you use anything like this on your hosting program/account? If so, what's the setup like? How many referrals have you gotten?
Do you use anything like this on your hosting program/account? If so, what's the setup like? How many referrals have you gotten?