A method and apparatus for enabling packet network service providers, e.g., a VoIP network service providers, to collect information on the feature usage of their subscribers and spontaneously offer them the opportunity to subscribe to enhanced service features based on their existing feature usage patterns is disclosed. For example, users who accumulate a lot of voice mail can be offered a locate me feature, those who frequently use Do-Not-Disturb features can be offered an instant messaging application, and those who engage in three way conference calls can be offered a personal conferencing service that provides up to 10 conference legs.