Firefox -- Remove duplicate bookmarks

Bookmark Duplicate Detector makes a good addition to go along with Foxmarks. Clean up all those duplicates created from your manual merges prior to Foxmarks.

https://addons.mozilla.org/en-US/firefox/addon/1553

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Foxmarks -- keep all your bookmarks synchronized across all your pc's

No more exporting and importing multiple times to get consistency across all your Firefox instances.

http://www.foxmarks.com/

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ScribeFire - integrated blog publisher and editor for Firefox

Makes blogging about a page an extension of the browser. Very useful for when you're finding new things on the net.
https://addons.mozilla.org/en-US/firefox/addon/1730

Also allows editing of previous posts.

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