Perhaps I'm weird (I've been accused of that before :-D), but I organize bookmarks into folders on the bookmarks toolbar (the folder is some topic which groups the links together for me according to some connection between them that is logical to me). For most bookmarks, two clicks and I'm in (even for those URLs I only use once every month or two). Even with the location bar searching on every keystroke, I still think I'd lose efficiency if the bookmarks bar went away. Plus the location-bar-based search doesn't help me if I know what general 'topic' a link fits into, but I can't remember anything about the site name or URL. Location bar auto-searching is nice, but I don't think it solves every bookmark-searching scenario.