4. Personal Information may be utilized by the Company solely within the scope of utilization described as follows. In addition, if the Company has obtained prior consent of the person relevant to the Personal Information, the Company may utilize the Personal Information to the extent authorized by such consent. (1) Provision of the Services and operations relating to the Services (including operations for processing sign-up, unsubscribing, confirmation of subscription, notification of renewal or re-signing, billing, payment and settlement, collection, and other related notification or announcement) (2) Research, questionnaire surveys, and analysis aiming at improvement of service quality (3) Introduction of goods or services offered by advertisers, sponsors, or other partners for the Services (4) Introduction of newspapers, books, or other services offered by the Company Chapter 4. Unsubscribing.