so, basically, a person signs up with some site with high degree of identification ( ssn, state id, email id, office id card, whatever, depending on the situati

so, basically, a person signs up with some site with high degree of identification ( ssn, state id, email id, office id card, whatever, depending on the situation ). So, his identity with the central site is intact. Then, this person creates a throwaway id for this particular posting, and this throwaway cannot be openly linked back to the person, by anyone other than the site itself. The weakness of course is in the central site. And to solve this problem, there are a few decentralized trust solutions