I only SMS with a few close friends and family and they are all using iOS as of a couple of months ago. So I will be punishing imessage as soon as iOS 5 arrives. So it's goodbye google voice and as for carriers, no way I am paying for SMS when I pay for a data plan. Goggle voice, MobileMe push email, third party texting app, imessage, whatever. Not getting any more money from me so they can suck it!