[Bossman]

If I were to guess, I would say about 5% or less of US mobile users are prapay. It's just not big here at all. Even though it's not the case, and at least it has changed recently, prepaid users are still categorized as those with poor credit that can't afford to get a contract, and for teenagers.

Also, as for tmobile's sms rate of $0.10. It's always been that rate AFAIK. I have had mine for at least 4 years. I just do not think a lot of people use it enough for them to start losing money.