I joined an online affiliate program which rewards its members for referrals. For every person who registers and mentions me as the person who referred them to the site, I will receive a commission. Now, since I belong to a large family, I wish to use their names to register with, mentioning my name as the one who referred them. I will ask for their formal permission, making sure that they have no objection to me registering them as members of various websites. They have faith in me and permit me to register on their behalf so I can receive the benefits. They have also permitted me to avail myself of any services on their behalf. I’d like to know whether in this situation with all of my family members’ permission, I can register them through my referral link and get the commissions. I'll obviously use real identifications everywhere I join in. Is this lawful in Islam?
Please know that if I had wanted to, I could have joined up thousands of false members for the commission. But I know that will be totally unlawful. And I don’t want to earn anything through sinful means. Whatever I earn, I'll definitely earn it lawfully providing real information.