Topic summary
Subscriber

Extracted from the Wikipedia article Subscription business model.
Subscriptions
Renewal of a subscription may be periodic and activated automatically so that the cost of a new period is automatically paid for by a pre-authorized charge to a or a checking account. A common variation of the model in online games and on websites is the freemium model, in which the first tier of content is free. Still, access to premium features (for example, game power-ups or article archives) is limited to paying subscribers.