The first day I register my device on apple itunes store with my credit card, $1.00 was charge on my card. I don't know what's that for because I didn't buy anything that time. I later bought*Asphalt 6: Adrenaline HD, v1.4.6*$0.99*and*Fast Five the Movie: Official Game HD, v1.0.1 $4.99. All these were rightly charged. Then on 5/2/12 another $1.00 was charged on my account. I don't know what are these $1 charges all for. Does it mean registering your card with apple store cost you $1 every now and then? Please, I want to know more about this so that I can the decision to take.