It seems TelstraClear might be considering free data traffic towards Steam Gamers..... FINALLY an ISP that listens.
I cannot confirm if it is true, however I do have this.
All I can say is that, if TelstraClear get free data traffic towards Steam I will be signing up to them without hesitation.
Edit: I realize now this has no proof of Steam on the pic, but I wrote up that blog post about Free Data Traffic towards Steam and directed that subject towards TelstraClear.