Where do we draw the line? Let's say I have 6 family members and each of them are accessing the internet from behind the same router with their accounts linked to their cellphone number. Will this be seen as abuse?
Just to add one thought onto what wetsuit has already shared...consider the line as, have all of these account been generated as referrals of one person in the house and for the purpose of generating referral commission? If so, you're getting very close to the line.
We had someone with 10+ referral accounts that were proven to be generated by the same person and controlled by the same person...this person had stepped over the line.