For more info on Recruit a friend, check out the official site

How to use the code:

1. Go to the Mog Station and login into your account: http://sqex.to/Msp
2. Click on your service account and choose "Manage Service Options"
3. Click on "Enter Recruitment Code"
4. Enter the code V24FCW4J


Benefits for you:
Aetheryte Ticket x 99 - Free teleports!!!
Friendship Circlet - Increases EXP by 20% when level 25 and below.
Ballroom Etiquette - Fist Bump emote.
10 Silver Chocobo Feathers - Use at the Calamity Salvager (in each starting city) NPC for special items or gear.