Every invite link has a little code at the end. Here's who has used theirs to bring the most friends along so far.
- 1
ytbhpy26d***h@7 friends - 2
opbm468ms***c@6 friends - 3
h7n7z501k***0@4 friends - 4
0vexgahdm***h@3 friends - 5
2hy5t8t7i***5@3 friends - 6
rl0dwubvl***z@3 friends - 7
foaufbprc***s@2 friends - 8
jtkg2stva***6@2 friends - 9
0t47bm6hd***y@1 friend - 10
8195zkczw***k@1 friend - 11
94zcdworc***3@1 friend - 12
caohyo36d***a@1 friend - 13
ivr4c9esz***o@1 friend - 14
nvxdddxgb***x@1 friend - 15
o0dkqxu1b***2@1 friend - 16
pqv7d2nxc***n@1 friend - 17
r97bi09tb***t@1 friend - 18
tc6izj8ot***1@1 friend - 19
xdyx9jawn***h@1 friend - 20
xxhx9nqqi***6@1 friend
Your code is the part after ?ref= in your invite link, and the letters beside it are the first and last of your email. Numbers update every few days, not live.