Live Bookmarks Done Right! This should be the default for Firefox (Boox is the best rss feed reader).
Open Bookmarks/History/Homepage/URL/Search in new tabs, and more utilities for tabbed browsing, including Protect/Lock/Faviconize/Unload Tab, Reload Every, Select and manipulate multiple tabs simultaneously, Tab Stacking/Coloring, etc.
Collector's Note Great replacement for Stay-Open Menu. Works great with Boox.
Facilitates opening multiple tabs from the Bookmarks Menu and various other bookmark/history related dropdown menus. Less need to keep reopening menu, without using the sidebar. Optional auto-closing feature adds extra convenience.
Enhanced functionalities for your Bookmarks...
Collector's Note Latest version 2.6 beta2 here: http://joliclic.free.fr/mozilla/boox/en/ - I can't do without this add-on, this is how RSS feeds should work in FF by default. http://joliclic.free.fr/mozilla/boox/telechargement.php?id=latest&action=installer
Eliminates unnecessary truncation of bookmarks’ and history items’ titles.
Collector's Note Show the full title of each of the feed's related articles. - Why would you only want the first 30 characters?!