clear traces,using proxys,portable navigators and banned

hi everybody

i try to create several accounts(referrals)on neobux dot com(ptc site) but always i get banned
tested several tricks but the most don't work..

i'm surprised how they can catch me
i clear all internet traces and change my ip and also tried to register with portable navigators ( i delete the entire floder after that) but also get banned lol

the unique method that works is using boot cd (i have tried ubuntu )
but it's time consuming

how can they do that ?

Well I'm assuming you're making the account logging into it one time tops, and than leaving it alone. They are seeing that's the only sign-ups you are getting and it just screams fake.

Maybe Flash cookies? The article at Adobe about them is called "Website Storage Settings panel". That'll show you how to see/delete them

They delete account in a short time (12 hours) .
i forget to say that their login system is 100/100 javascript (form id rondom)

can they determine the machine name?