I don't know... this seems like a bit much to me. Plus you'd have to buy a keyboard to use with it (as seen in the picture), and really, how often would the keyboard even be used? Just how many typing games can there be in the future? I don't think typing games have ever really been a hot item...
I guess you could use the keyboard for chatting, too, but it'd be too big and clunky to take around with you... Seems like the on-screen keyboard would still be easier and less of a hassle. But that's just me.