I usually forgot if I have bookmarked a page or not, so I bookmark it again and again. Then when I want to check I find lot of duplicate links in my bookmark, so BookmarkDD plugin totally solved my problem by alerting me everytime a bookmark is already existing. BookmarkDD work correctly with Firefox 1.0.* and 1.5.* and is available in about 23 locales including : en-US, da-DK, de-DE, el-GR, es-AR, es-ES, fi-FI, fr-FR, fy-NL, hu-HU, it-IT, ja-JP, ja-JP-mac, ko-KR, nl-NL, pt-BR, pt-PT, ro-RO, ru-RU, sk-SK, sv-SE, zh-CN, zh-TW.
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Detects Duplicate Bookmarks when bookmarks are added and specify where is the previous URL. You can also search and delete duplicates URL already in your Bookmarks.
If you think it is difficult to find a bookmark within all of them then you need this extension. BookmarkDD add possibility to search string within bookmark’s location and bookmark’s description field. See previews …