Internode looks to be running another $100 credit promo for new customers. All you need to do is translate a script. Hint - you can just hit the 'Help' button and you'll be given the translation anyway!
T&Cs from the bottom of the page: *Promotion valid until 7 January 2015. Available on 24-month ADSL, NBN or FTTH broadband plans. This offer is valid for new customers only. Not in conjunction with any other offer.
I'm an existing customer moving residence and tried to get it applied… No dice. But my brother is going to take advantage of it as he's moving out now.
Also a whirlpool thread that cover the promo:
http://forums.whirlpool.net.au/archive/2121048
fyi Receive a $100 Visa Card with Any 24-Month Naked, DSL Broadband or NBN Plan @ iiNet ends this month :)