I'd like to suggest that the person getting reffered get's a reward too. Most referral systems I know of for mobile service give both the referrer and the referree a bonus. Now I don't think it has to be $1 per month indefinitely, like for the referrer. But perhaps a one time credit of around $10+ to go towards your first 10,30, or 90 day payment. Or maybe a welcome bonus of one of the addons like free 200Mb addon, or free 400 mins long distance. Kind of an incentive for your friend or family member to try out Public Mobile. It will also help incentivize the person to remember to fill in the referrers phone number, in case they forget. Would not be nice to refer someone to PM and then miss out on the reward because your friend forgot to mention it when activating the line.