• ReadWriteWeb, Wednesday, November 10, 2010 1:49 PM

What's the second most popular app on Facebook? Ahead of Texas Hold Em Poker, FrontierVille and Café World, Windows Live Messenger now claims the Number 2 spot behind Zynga's FarmVille. According to AppData's Facebook app top 10, Microsoft's instant messenger app now has 9 million daily active users, compared to FarmVille's 16 million. What's Microsoft's secret? Launched less than three months ago, the software giant released the latest version of Messenger with a deep integration of Facebook and Facebook chat, according to ReadWriteWeb.

What's more, "In order to allow both Microsoft to connect its 300 million Messenger users to Facebook without running into performance issues, the two companies decided to roll this partnership out slowly." Even more impressive, Microsoft says that only about 20% of Messenger users have access to the new app. According to Dharhmesh Mehta, Microsoft's Director for Windows Live product management, there have now been over 250 million chat conversations between Messenger and Facebook, lasting over 1.5 billion minutes in total.

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