6. A method, comprising: an identity manager to manage a plurality of user identities and to determine whether any user identity satisfies security policy requirements; a 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 the user identity wherein the user identity is represented by at least one information card used in completing an online transaction with a 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; the user agent evaluating at least one privacy preference against a privacy policy associated with an 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 the user identity satisfies the security policy; a host computer providing the at least one information card representing the user identity to the relying party.
6. A method, comprising: an identity manager to manage a plurality of user identities and to determine whether any user identity satisfies security policy requirements; a 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 the user identity wherein the user identity is represented by at least one information card used in completing an online transaction with a 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; the user agent evaluating at least one privacy preference against a privacy policy associated with an 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 the user identity satisfies the security policy; a host computer providing the at least one information card representing the 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.