This policy setting prevents users from having Internet Explorer automatically discover whether a feed or Web Slice is available ...

This policy setting prevents users from having Internet Explorer automatically discover whether a feed or Web Slice is available for an associated webpage.

If you enable this policy setting, the user does not receive a notification on the toolbar that a feed or Web Slice is available.

If you disable or do not configure this policy setting, the user receives a notification when a feed or Web Slice is available and can click the feed discovery button.