Users can subscribe to feeds using their favorite reader.
See Viewing for details on the in-page subscription experience.
The Location bar shows a "Subscribe" button when the current page has feed(s) available for subscription.
The first time the user clicks on the button, the preview page is shown with subscription options expanded. They get the option of remembering their decision for the future. If they do this, clicking the button will subscribe them directly with their preferred reader without showing the preview page, unless there is more than one feed available.
Subscribe Menu Item
??? Subscribe menu item in Tools menu under Web Search? (sec508?)