| 摘要 |
<p>PROBLEM TO BE SOLVED: To attract many free and charged users to a community and to charge a price corresponding to an application state to each charged user while maintaining action in the community. SOLUTION: Although login to the community is not charged, an item or a function for providing a differential factor to a user in community service is charged. Since the login itself is maintained free of charge, each user can join the community without hesitation, so that the number of participants is increased and the community itself is formed. Since a property that items or functions should be optionally prepared by each user is strong, there is no objection or incompatibility in almost of users with respect to charging.</p> |
