1. We claim a method for exchange of pseudonymous personal information between or within at least one data storage servers in which the identities of the associated individuals (Person or Organization), associated servers and/or associated organizations with which the said Private Data resides is pseudonymous. We claim a method for exchange of pseudonymous Private Data between a User and one or more data storage servers in a Closed System (e.g. where user access is restricted at the database level) in which the identities of the associated individuals (Person or Organization), associated servers and/or associated organizations with which the said Private Data resides is pseudonymous. We claim a method for exchange of pseudonymous Private Data between a User and one or more data storage servers in an Open System (e.g. involving two or more databases or data sources, such as email, fax, telephone, etc.) in which the identities of the associated individuals (Person or Organization), associated servers and/or associated organizations with which the said Private Data resides is pseudonymous. We claim a method for exchange of Private Data between or within at least one data storage servers in which the identities of the associated individuals (Person or Org), associated servers and/or associated organizations with which the said Private Data resides may be pseudonymous or actual based on the User's Access Control Rules.