Facebook Messenger for Windows, Android, BlackBerry, and iPhone Facebook messenger is officially available for Windows desktop. Adding to various chat applications already present for Android, Blackberry and iPhone, Windows Desktop app is the latest for Windows users. The chat application essentially replicates the side bar of the Facebook site right on your desktop. This is a late but good move by Facebook because there was a dearth of good chat apps which did something beyond basic support for chatting using Jabber Protocol. Many of the available apps were malware at best and were of little to no use. Facebook, we feel was tad late releasing this app for Windows but never the less it is really welcome. Installation on Windows Desktop The app is only around 400 KB so you should be good to go in minutes. Messenger is currently available to Windows 7 only with the Vista version being in development. Facebook has stated that they will not support XP as of now. Go to http://www.facebook.com/about/messenger , download and install facebook messanger. Installation on Mobile To get the app on you Mobile : Visit fb.me/msgr on your Android, BlackBerry, or iOS device Go to the App Store or Android Market Or visit http://www.facebook.com/mobile/messenger Facebook on iPhone So go for Facebook messenger, it will let you chat with your friends anytime without using your browser.