Update: 1 September 2013 Redbull ceased to be a?Mobile Virtual Network Operators (MVNO)
I?ve got a free Red Bull Mobile SIM for their new GSM network in Australia. I got it because I have some Klout.
If you are fast and in Australia, you can get a free Red Bull SIM too.
If it works for you, please ?like? this post on Facebook, +1 it on Google Plus or comment below as a sign of thanks.