Microsoft released the latest version of Messenger with a deep integration of Facebook in order to allow Microsoft to connect its 300 million Messenger users to Facebook. As a surprise note, WLM is the second most used app in Facebook after "Farmville" with some 9 million daily active users. At this point, Microsoft tells us, only about 20% of Messenger users have access to it, making these numbers even more impressive.
Dharhmesh Mehta, Windows Live Directore, noted that there have now been over 250 million chat conversations between Messenger and Facebook, lasting over 1.5 billion minutes in total. He also noted there're just over 5 million active Messenger users on iPhones and 10 million on BlackBerry. According to Mehta, 80% of new consumers PCs are now shipping with Live Essentials pre-installed, so the user numbers for Messenger will likely continue to grow.