8 Add-ons That Enhance Firefox Bookmarks Management

We love Firefox, though it is not ideal. And what in this world is? Fortunately some guys never stop developing add-ons to make our usage of firefox bookmarks management full.
Here is a short manual with most useful Firefox bookmarks extensions.

1. SortPlaces
An absolute extension for sorting Firefox bookmarks both in manual and automatic modes. Features many sorting options for Toolbar, Menu and Unfiled bookmarks. Two-levels sorting (including folders order, queries, livemarks, etc) can be applied for every. A special function keeps selected links from sorting.   
Homepage: http://www.andyhalford.com/sortplaces/index.html

2. Tidy Favorites
A smart add-on for Firefox bookmarks, strongly focusing on a visual approach. Leave text bookmarks behind - welcome live thumbnails of your favorite websites. Any area of the site can be saved as a thumbnail. It is easily resized and managed in a moment.
The stack area for temporarily bookmarks is available. All links are hold safely in a common database and can be easily synchronized.
The add-on is absolutely compatible with other browsers: IE, Chrome and Opera. Portability option on a USB drive is offered.
Homepage: http://www.TidyFavorites.com/

3. Video Bookmarks
Crazy tool for video maniacs presented by myVidster. A social bookmarking and backup web service for searching, saving, managing and sharing videos from any video source.
Video clips can be downloaded from multiple video hosts (Youtube, blip.tv, Veoh, Vimeo, Dailymotion, etc), websites or weblogs. The user can handily create a favorite videos group, hold it on the server reliably and share with a social group.
Homepage: http://www.myvidster.com/

4. Multirow Bookmarks Toolbar
The extension ideally provides one mere function: organizes Bookmarks Toolbar in several rows depending on the users's preferences. Working with various Firefox bookmarks turns more convenient soon.
Leave behind the horror of guessing sites names from one letter left. Now all tabs are distinctly presented. Though the quantity of rows is limited.
Homepage: http://space.geocities.yahoo.co.jp/gl/alice0775

5. Smart Bookmarks Bar
This tool features another clever way to clear up the problem with the lack of space on your Firefox bookmarks bar. All the saved URLs are placed under icons, their titles come out on top when you point a mouse to the needed one. One can hold a great variety of bookmarks there, and toolbar still seems very optimistic.
Homepage: http://remy.juteau.free.fr/spip/spip.php?article2

6. Bookmark Duplicate Detector
As you can suggest from the name, this add-on finds duplicate Firefox bookmarks when new one is added. It also informs you where the previous link is located. You need to decide on the one which you delete, and which one you let stay.
The add-on also let discover and organize duplicates within already saved URLs.
Homepage: http://bookmarkdd.mozdev.org/

7. Hide Unvisited
A practical extension to hold your address bar clear from those links which you stopped visiting. Hides links of sites suffered from deleting or clearing history. It is supposed mainly for users who like "nothing extra" approach to AwesomeBar. Already upgraded to Firefox version 3.5.
Homepage: http://ed.agadak.net/

8.   GMarks
A convenient add-on to synchronize your firefox bookmarks with Google Bookmarks, letting their swift transfer from Firefox to Google and vice versa. The add-on is absolutely independent from Firefox bookmarks but is treating them nicely: never hiding or losing any.  
Filters add labels and descriptions to new links, they are easily edited and organized.
Homepage: http://groups.google.com/group/GMarks

As you see, web is a wonderful place to find useful tools for various challenges. If you can't find any required, share your complaints with blogosphere. And soon someone will surely help you with a new Firefox bookmarks add-on.