Brainstorming challenge; referral contest idea!!!

Hi steemians!!!
I have been think about this contest idea for sometime and I think it's worth trying..a contest whereby contestants tag a user they have referred to the steemit community and the user tagged need to confirm the entry that he was indeed referred by the contestant..then winners will be chosen at random or according to the number of people you have referred..
The aim of the contest is just to encourage more engagement in the community and reward steemians that have bought much minnows into the community..
The title of the contest will be #irefer @username..

Thanks for your time!!!!