About receiving notification of changes to a file or discussion
The Subscription feature enables you to be notified by e-mail of any changes made to a Web site. You can cancel a subscription at any time.
You can subscribe to an individual page or to all the pages (files) stored in a folder on a Web server. When you subscribe to a page or a folder, your discussion server alerts you on a scheduled basis if a file or folder is modified, deleted, or moved, or even if a new file is created in that folder. You can also be alerted if a discussion comment is deleted from a file, or if a new discussion comment is added.
Note On a discussion server running Windows SharePoint Services, you cannot create subscriptions by using the Web Discussions toolbar. For information about creating alerts, which replace subscriptions in Windows SharePoint Services, see Windows SharePoint Services Help.