My wife and I live in Australia. She often texts her girlfriends and mother in the US which is 80c a pop. She shows very little self control when it comes to this and I do not want to force her to stop, so I need some options. Her mom has an iPhone, have no idea about the other phones. She has a Nokia N97 Mini. So what program will allow messages to be exchanged for next to nothing?? We get free skype on our plan (4000 mins of talk or something) so maybe IM through skype would work, but have no idea if they can use skype. Im sure the iPhone can. Any other options out there?? You help is greatly appreciated in advanced.

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