Answer:
Three little letters, a paradox to some. The worse that it is, the better it becomes.
I am what remains when nothing is left.What am I?
I can be used to type and point you see. But don't forget, you can count on me. What am I?
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
A doctor might remove one from the neck of a Dracula victim.
Do what he says and you'll be fine, don't and you lose the game.