[lautzutao]

I'd like to know when you DON'T make continuation bets of half the pot. Do you only bet more than half of the pot when you have a big hand? Do you bet less(or check it) if you miss the flop or hit a draw?

I don't think you ever want to do one action in a particular situation all the time...someone is going to pick up on it eventually and punish you for it. As to how much you vary it I'm afraid I don't really know.