How did someone sign up as my referral?

[HoveringWombats]

I got a notification that someone signed up as my referral. Only problem is, to my knowledge, I haven't referred anybody. How would this happen? Is it something I need to worry about? (Mainly just hoping that a referral isn't somehow considered me vouching for the person, because I have no idea who it is or where they came from.....)

 

[Megnut]

I got a notification that someone signed up as my referral. Only problem is, to my knowledge, I haven't referred anybody. How would this happen? Is it something I need to worry about? (Mainly just hoping that a referral isn't somehow considered me vouching for the person, because I have no idea who it is or where they came from.....)

Tagging @Fraize because he knows all this hard stuff.