I didn't know about that service for promoting your referral link. I don't know how they can provide you with active referrals, and even if they can for faucets how can they find active gamblers if you wish for referrals in casino?

I doubt that can work, I use Facebook and Twitter for promoting my referral links. First I try to give nice explanation about link and second I share it couple times per day. I have pretty nice success from that. If you don't have many friends or followers you can work on that and in some time you will see results.

Don't waste your money for nothing. Sometimes its better to invest your time in energy then money.