Note that this extension won’t be useful in Firefox 3 because of the redesigned “Places” feature.Download Flat Bookmark Editing extension from Mozilla Add-ons
Edit Your Firefox Bookmarks Easier with Flat Bookmark Editor
If you are working on editing a bunch of bookmarks at the same time, you've already noticed the pain of having to click on a bookmark and then click Properties, and then edit the details in a popup dialog... and then close that and repeat for the next bookmark.
