Well, to keep it rather short. For few last months we have something ingame i would refer too as "referral trading". Many players are paying other people in credits for using their referral links, that grants them ingame rewards( cartel coins, pet, mount). I have done it too, payed a big amount of credits for many players, just for using my referral link. Both parties were happy after every deal. Of course i have checked ToS, forums, etc. before doing so. Still, i have asked Customer Service lately about this, and about how many referred players you can have (heard stories on my server that some people got banned after getting more than 100 referrals). Well, CS response for this question is-"Firstly we are happy to confirm there is no upper limit on the amount of Friends you can refer using the Friends of Star Wars: The Old Republic program. However with that in mind in order to conform with the rules of the referral program, we request that you do not mask (hide) or SPAM your referral link."
It would be nice for someone from Bioware to finally answer this.