Quoting Dan Moren from MacWorld.com, the goldmine that is Short Message Service [a tiny amount of bandwidth with a huge price tag] will be free from iPhone 5 users to other iPhone 5 users through Apple’s servers. Moreover, it will likely cause a shift within the industry.
"Once iMessage rolls out, users of many of Apple’s more than 200 million iOS devices will be able to exchange text, picture, and video messages with each other for free. And, best of all, it’s completely transparent to users; iOS can figure out whether it needs to send an SMS or an iMessage, depending on the intended recipient. Apple’s legendary ease of use may deal the most significant blow yet to the existing text messaging model.”
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