Xbox 360 has a chat and keyboard
In the near future, on the Xbox 360 game console, it will be possible to launch the Windows Live Messenger IM program - a chat client, the same as on personal PCs and Windows smartphones. For chat on TV, Microsoft this summer will release a special keyboard that will connect to the headphone jack.
Reportedly, the console version of Windows Live Messenger will support simultaneous chat with up to six users.
The subscriber base of Windows Live Messenger is more than 260 million active accounts, and now it can grow even more due to those users who do not have a computer, but there is a game console and a TV.

The addition of an IM pager to the software package will take place as part of the Xbox 360 Spring Dashboard, which is scheduled for May 7. Along with it, other improvements will be implemented, for example, a separate window for the Xbox Live Marketplace, the ability to start viewing partially downloaded movies and the function of automatically turning off the device after the file has finished downloading. Read more about this update in the video.
via Joystiq

The addition of an IM pager to the software package will take place as part of the Xbox 360 Spring Dashboard, which is scheduled for May 7. Along with it, other improvements will be implemented, for example, a separate window for the Xbox Live Marketplace, the ability to start viewing partially downloaded movies and the function of automatically turning off the device after the file has finished downloading. Read more about this update in the video.
via Joystiq