1. A system for management of a network address book, comprising: a network address book (NAB) manager configured to manage network storage of content information of a plurality of users; said NAB manager configured to populate contact information from a user device; said NAB manager being configured to manage the receipt of information from a user related to sharing of at least some of said information with at least one other user; and said NAB manager being configured to provide said at least some of said information for said at least one other user.