6. 7. 8. Let me clarify. You can register each serial# 3 times.<<< So, for me who has already performed 4 systemn upgrades in 9 months, I have to buy Poser again every 9 or 10 months? No thanks. >>>2, 3, 4.) Again you don't know that it won't stop warez.<<< Yes, I do. >>>Max 4 uses it. I have yet to find a crack but that's not to say that it hasn't or won't be done. It's been out since around January.<<< It has been cracked. >>>Pixels 3D seems to be successful with a similar scheme.<<< This one I am not aware of. I do not know if it has been cracked or not. >>>Both make it much more difficult to obtain additional uses for serial numbers.<<< The best crackers will make the requirement of a serial number moot. The cracked version will not need a serial number at all. Count on it.