It lets people make mobile calls internationally for free to others who have downloaded the software.

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Calls through Gmail to mobile phones internationally will be more expensive, with users paying 18 cents a minute for calls to the U.K. and six cents a minute to India, for example.

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The least internationally mobile innovation, on the other hand, is the downstream sort, where big ideas are made suitable for a local market.

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Of special interest to us will be if that migration is broad based, not largely confined to the larger, internationally mobile depositors (as was the case in prior banking scares).

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First is that the prime minister appears to feel more or less powerless to use much more than moral suasion to ensure the biggest, most internationally mobile companies pay the going rate.

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Now that all three of them are so huge in the UK, is it remotely plausible that they would suddenly emigrate and stop trying to sell as much as possible to British consumers if they suddenly faced tax bills comparable to those paid by less internationally mobile UK companies?

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And in a world of internationally dispersed and mobile work teams, immediate access to those assets is essential.

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Box will use the funding to expand internationally and invest in its technology, focusing on its mobile strategy, which enables customers to share files and collaborate from a variety of mobile devices.

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All three of those Chinese Internet titans are expanding internationally: Just this week, Baidu teamed up with France Telecom to launch a mobile browser service in Africa and the Middle East.

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