Xbox 360 users are set to access more than 260-million users via Instant Messaging, with the launch of Windows Live Messenger on Xbox 360. 

This means users will be able to connect friends across Xbox 360 consoles, Microsoft Windows-based PCs and Windows Mobile-powered devices.
Beginning the week of 7 May, the Xbox 360 Spring Update will provide Xbox 360 owners worldwide with access to Windows Live Messenger features, broadening the communication options on the Xbox LIVE social network.
Members of the 6-million-strong Xbox LIVE community currently send more than 2-million text and voice messages a day and can now use Windows Live Messenger to text chat with up to six people on their contact list at one time, while playing games, listening to music or watching movies.
Text chat adds to the variety of options friends and families already have to communicate with on Xbox LIVE, including voice and video chat.
Current relationships on Windows Live Messenger and Xbox LIVE will be unified on Xbox 360 and users will see at a glance if their existing friends on Windows Live Messenger have gamertags, expanding the breadth of connected experiences they can share online.
“Bringing the largest IM community in the world, Windows Live Messenger, to Xbox 360 makes sense, as Xbox LIVE has really become the largest social network on television,” says Jerry Johnson, product unit manager of Xbox LIVE at Microsoft.
“For our growing community of 6-million on Xbox LIVE, using Xbox 360 is a very social, connected experience. They are using Xbox 360 to play games, music and movies while simultaneously communicating with one another through video, voice and text chat. With this announcement we are simultaneously expanding the access of Xbox LIVE users to existing friends and family while introducing Windows Live Messenger users to the benefits of Xbox 360.”