I have three referrals but I can remember five people who made an account here after finding it through me.

Cambria and Bex joined after I went on ZU at school and they were spying bastards.
Craptastic joined after I probably linked her and went "join this site".
Another girl from school joined but posted about once and then never came back.
And my friend from Tafe joined recently, posted almost exclusively in the Repo thread in Entertainment, and disappeared.

Considering that two of my referrals turned out as mods, I think I did a good job.
:B