updated 03:10 pm EST, Thu December 29, 2011
Facebook Messenger for Windows 7 up for download
The Facebook Messenger app for Windows 7 PCs that's been in testing since November is now available unofficially from a third party, TechIT found (direct download). Included in the app is the chat function, the ticker feed of friends' activity, and Facebook notifications. The app can snap to the side of the screen thanks to its dock feature.
Facebook has previously released dedicated apps for iOS devices, with the iPad getting it the latest, as well as Android and BlackBerry devices. Messenger has usually only shown on smartphone-sized devices and never on the desktop.
When Facebook itself releases the app isn't known, but it should be relatively soon. [via The Verge]