Instant Messenging for Xbox Live

[Kwaad]

Or, you could always use a USB keyboard... At least that's how it works on the PS3.

EDIT: It type around 80wpm, and it really makes me mad trying to type on one of those things, becuase I type faster than I talk, and when I'm on something like that I type about 5-10 wpm, wich kills me. And I'm talking after I get good at it. I think the simple controller text entry is almost as fast. (cell phone style)