It's official, folks: Hell has frozen over and TripAdvisor is selling tickets to an ice-skating party on Beelzebub's swimming pool. A week after a slew of Microsoft mobile apps were released for iOS (iPhone, iPad) and Android, the software giant today released versions of its Lync 2010 client for both the iPhone and iPad.

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As with the Windows Phone and Android versions, Lync 2010 for iPhone and Lync 2010 for iPad are free but require an on-premise Lync 2010 Server or Lync Online, part of Office 365. And for whatever it's worth, though I've been clamoring for this kind of Microsoft mobile apps availability for several months now, I mean, wow. It's kind of strange to see it actually happen. I guess I'm just accustomed to seeing my recommendations ignored. :)