Now that I think about it it could possibly be used in place of a keyboard for an mmo, like wow or whatever. I could see it working as long as it had tactile feedback (wouldn't be as accurate as a keyboard but it could get close with practice)
If it were capacitive, maybe. On a resistive screen, not so much. You could type with a stylus, but it's such a pain to make sure you're pressing all the keys down while typing fast enough. >.<
Don't forget the screen with only 6 inches, so there is no way in hell that you will be able to type accurately with both hands. A 10 inch touchscreen is about the limit for most people, maybe a little less for people with relatively small hands, but at 6 inches you are thumb typing which is not nearly accurate nor fast enough to play an mmorpg