Currently, users must subscribe to a service so it knows whom to bill.

Users can also subscribe to 3rd-party online services, for a fee.

But first, potential users must subscribe to the system.

Use of the system is based on membership, and users can subscribe online or by visiting a service office.

Other users can make comment to the group, and subscribe to the group.

Web Slices are snippets of the entire page to which a user can subscribe.

Users must subscribe to the website to access file downloads.

Users can subscribe to the syndicated feeds for free using a web browser.

Users can subscribe to the ad-free (Platinum) service for $11.99 per month.

Users must subscribe to a service plan, to start at about $10 a month, which will provide 15 minutes of talk time or 10 location look-ups.