From what I recall too, the marginal cost of SMS is 0, because text messages are sent on your cell phone's control channel (also why you can't send/receive a ca

From what I recall too, the marginal cost of SMS is 0, because text messages are sent on your cell phone's control channel (also why you can't send/receive a call while a text is transferred): http://mobile.slashdot.org/comments.pl?sid=433536&cid=22219254 http://mobile.slashdot.org/comments.pl?sid=433536&cid=22... That said, I can't wait to see the BS they come up for this one.