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Telappliant has a rather obvious poke at the misunderstanding of the way the mobile world of communications is going. It's no longer about voice. It's about IP based traffic and you don't need to be a genius to figure that out.
What that means with the looming worldwide arrival of LTE is that voice applications providers and developers finally have the playground they always wanted, and for the most part the traditional carriers will care less about the "minutes" and start caring all about the byte. All the bytes that will begin to take a bite out of your wallet.
Sure there will still be those folks who need only a minutes plan, but as the mobile operators look ahead, they're information and content delivery carriers, not simply a phone company without wires.
Those that are both wireline and wireless have the best opportunity, which is also why the cable folks like Cox Communications and Cablevision are jumping into the mix chasing voice calling with more vigor as the year goes on in mobile, and not only landline replacement.
Oh, and before I forget, video is likely going to become a big part of things, if not in some cases augment or even replace those old person-to-person voice calls. Skype, is just the start of things.