A warning to users when a suspicious referral is detected.
I've entered several referrals from my own links. They appear in the fraud detection, but I was never warned I had been detected. So people can continue do this and believe they are entitled to the giveaway.
I'm in a market where many people will test this for sure. If they are not warned, they'll feel the contest can be cheated too easily and they will not participate.
I agree. I've run campaigns and people thought they had X amount of points but they had referrals under suspicion. It's just better transparency for them to be notified to stop cheaters but also let the legitimate users be notified so they can dispute incorrectly identified problems.