So, lets say i purchase PRIVATE proxies from a service. Are these "new" proxies? Meaning that they have never been used before? I understand that "shared" proxies, multiple people are using them. But if I put down the extra dough for a Private Proxy, is it guaranteed to not have been used before or is it just exclusive to me at the moment and has been used before by someone else? Obviously my concern is that if I pay extra for a "private" proxy I would not want it to be tainted from past users.