-click the orange web feed icon that appears in your location bar
-In the list that appears, click on the name of the feed that you want to subscribe to
-Firefox will preview the feed you selected
-To add the feed as a Live Bookmark, select "Live Bookmarks" from the list next to "Subscribe to this feed using". Then, click on the Subscribe Now button.
-The Add Live Bookmark dialog will now appear. Enter a name in the NAME field as you want this feed to appear in your bookmarks. Select where you want to save this bookmark using the list in the CREATE IN field. Press the ADD button.
-Additional information about Firefox's live bookmarks can be found over here.
-Just click the "Add Subscriptions" link in Google Reader and type in, or copy and paste, the address of the feed you want to subscribe to.
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