If you aren’t familiar with what Refer-A-Friend normally does in games, let me give you an idea. RAF will under normal circumstances give you free game time, some in-game items, possibly a mount, some xp bonus when you level with your friend grouped, or even a bonus of being able to summon your friends. Sounds great, right? Well I can say this about Bioware, they aren’t skimping on offering the service. All you need to do, is login at swtor.com, and then you will be able to send a request to your friend. They in turn will get a link, which will allow them to sign up.
What do you get in return for signing up your best buddies in the world? Nothing. Not at this point anyways. RAF simply allows you to officially invite your friends.