Add-on Referals?

[billybatz9]

Is there an addon that can deal with referrals? I would like to do a contest for my members and stuff that deals with referrals.

 

[Mouth]

http://xenforo.com/community/threads/friend-inviter-paid.35651/page-25#post-618120 <-- closest, I believe, but no referrals option (yet)