a bookmark (for now) opens a website
ONE website
why not adding the feature of having ONE bookmark for a new tab or window with several targets?
so you can have all relevant ebay cockpit pages open at once toegther with your favorite news sites
with one bookmark
entering those pages in one bookmark menu and then telling firefox "open all in new window" does not help
you may want to have more or less in those bookmark menus and you may not want to have the same link over and over again in several different areas of your bookmarks