$40 brokerage credit each for referee and referrer. Credit capped at $6.50 per month. Flat rate brokerage at $6.50 (or cheaper if you prepay). ASX or US brokerage I've seen and of course you own the shares through HIN. Micro investing is available too for $10 credit for both referrer and referree.
Also Nov 29th is free brokerage day with CHESS sponsorship.
I just signed up a few days ago