As expected, Skype is officially available for the iPhone as of Tuesday, and will soon launch a client for BlackBerry.The client, which is limited to Wi-Fi (no VoIP over 3G for you, iPhone users!), provides a native way to access the No. 1 international voice provider, butfaces competition from companies like Fring, TruPhone and Nimbuzz, which already offer a way ... (90 words)

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