Subscription Model

Users are charged a periodic -- daily, monthly or annual -- fee to subscribe to a service. It is not uncommon for sites to combine free content with "premium" (i.e., subscriber- or member-only) content. Subscription fees are incurred irrespective of actual usage rates. Subscription and advertising models are frequently combined.

Content Services -- provide text, audio, or video content to users who subscribe for a fee to gain access to the service. [Listen.com, Netflix]

Person-to-Person Networking Services -- are conduits for the distribution of user-submitted information, such as individuals searching for former schoolmates. [Classmates]

Trust Services -- come in the form of membership associations that abide by an explicit code of conduct, and in which members pay a subscription fee. [Truste]

Internet Services Providers -- offer network connectivity and related services on a monthly subscription. [America Online]