6. In a combination including an identity manager and a user agent executing on a host computer, the combination for use in at least one online transaction with a relying party providing at least one security policy having requirements and at least one privacy policy, a method, comprising: the identity manager managing a plurality of user identities and to determine whether any user identity satisfies the security policy requirements; the user agent providing at least one privacy preference relative to at least one user identity; the user agent receiving user selections indicating at least one privacy preference-related input pertaining to at least one user identity wherein the at least one user identity is represented by at least one information card used in completing a first online transaction with the relying party; the user agent generating at least one privacy preference, using the user selections; the user agent furnishing the at least one generated privacy preference to the providing step; and the user agent evaluating at least one privacy preference against a privacy policy associated with the first online transaction and obtained from the relying party, the evaluating using the at least one privacy preference of any category referencing at least one required attribute; wherein upon the identity manager determining a first user identity that satisfies the security policy and upon the user agent determining that the privacy policy matches a ruleset associated with a first privacy preference relative to the first user identity, the host computer providing the at least one information card representing the first user identity to the relying party.
6. In a combination including an identity manager and a user agent executing on a host computer, the combination for use in at least one online transaction with a relying party providing at least one security policy having requirements and at least one privacy policy, a method, comprising: the identity manager managing a plurality of user identities and to determine whether any user identity satisfies the security policy requirements; the user agent providing at least one privacy preference relative to at least one user identity; the user agent receiving user selections indicating at least one privacy preference-related input pertaining to at least one user identity wherein the at least one user identity is represented by at least one information card used in completing a first online transaction with the relying party; the user agent generating at least one privacy preference, using the user selections; the user agent furnishing the at least one generated privacy preference to the providing step; and the user agent evaluating at least one privacy preference against a privacy policy associated with the first online transaction and obtained from the relying party, the evaluating using the at least one privacy preference of any category referencing at least one required attribute; wherein upon the identity manager determining a first user identity that satisfies the security policy and upon the user agent determining that the privacy policy matches a ruleset associated with a first privacy preference relative to the first user identity, the host computer providing the at least one information card representing the first user identity to the relying party. 7. The method of claim 6 , further comprises: the user agent conducting a process to define at least one category, populate each category with a respective group of user identity attributes, and determine a privacy preference for each category.