In order to do the A > B > C > D > E Recruit a Friend scheme, can they all be on one battle.net account (ie. one email address?).

Do I have to create new battle.net accounts for the chain referrals?

I'm a bit confused on the best way to do this. I have 1 main account with a couple of lvl 85 toons, i'd like to get 4 more accounts to start multiboxing again.

Thanks,
Nixi