So, just a quick question. I've noticed in multiple threads now that people are stating that they have multiple copies of Star heads for trade. HOW IS THIS ACHIEVED? The easiest explanation for me is that someone could have multiple Live accounts and then just sign in on them to transfer a head when needed, but with some of the number people are posting, I'm wondering if you can somehow stack multiple copies of the same head with the same account, or if some of the special unlocks can be unlocked multiple times. For example, I have Alien Hominid on the Xbox and the corresponding head has been unlocked for me. If I trade the Alien head away, will I be awarded a new one if I restart BBT or is it gone for good? Ditto for a head unlocked by completing a feature. Cheers to anyone who might be able to shed some light on this.