Did anyone ever get a Referral?

I have seen many people using this community lately for referrals in companies like Amazon, Flipkart, etc but I think it's not very rational of people to think that they will get a Referral out of this community or app because it's almost like a stranger recommending another stranger for a job profile and it of course also comes with a sense of responsibility that the one joining doesn't do any mischief so why will someone actually do Referral?