I just made an easy £60 by recommending 3 to my mum and sister. I was going to do it anyway as it makes sense for the family to utilise the unlimited 3 to 3 minutes but saw 3 are offering rewards for signing up your mates. I called 0800 358 4201 gave them the details and hey presto, I've just received the credit. Even better, whoever you recommend gets £30 credit too! Just working out how I can pay my whole yearly bill.