Guru Profile ?

I went to my profile, and noticed *Referrals* and was wondering what it was reffering to, no pun intended.

I know what referrals are, but refferal to what? Any help would be appreciated.

If you tell someone about guru and they register here, it asks them did anyone refer you here or something along those lines and if they add your username there you get a referral. Same with most forums.