Last month, New York-based United Virtualities released software called HotRecorder that can archive calls over PC-based VoIP services like Skype, AIM, Yahoo!

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"I guess we can look forward to Skype 2011 in a few years, " said another commenter, taking aim at Microsoft's image as a slow-moving old-Web company.

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The aim isn't just to provide a more consistent level of performance -- the Skype deal also provides a ready-made sign-in process, whether or not visitors have Skype accounts, as well as someone to turn to for help.

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Look at Skype, which has over 250 million users and is continually growing, and think back to AOL Instant Messenger (AIM).

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