As said above you must be very careful to who you give the other account to. It's not really encouraged to just give out your other accounts to friends cause the connection used from you r other is billings are still somewhat connected with there's, and if they so happen to do anything bad or rule breaking, then that would mean that you and your other 2 accounts would be out. It's the way Feral Heart is and as stated before by Red:
"You are responsible for your own Internet connection, and sharing accounts is not recomened."