A web-based contact builder, management system and a computer-implemented method to assist a user in efficiently managing and communicating with their designated contacts. The system enables a user to manage existing contacts; to identify via automated means new contacts and determine if they are registered users, or to invite them to join the system; to invite and respond to requests from new contacts in an efficient “one step” method; and to set the level of access that each contact will have to the user's personal identifying information.