You do need an account to be part of the referral program (after all, without an account, where would we put all that money you earn?).  There are 2 ways to get an account (which is different from being a subscriber).

1)  You can buy something - which is of course recommended(!). We'll create an account for you during the order process

2)  You can create your own account.  It's quick and easy!

Thanks for recommending jasmere. You may have just taken your first step down the road to riches...