The most frustrating thing about Firefox is that the "Bookmarks" folder automatically closes itself whenever I click a bookmarked site. I would like the "Bookmarks" folder to behave like the "Favorites" folder does in IE... I want it to stay open on the left side of the screen, with the site I just clicked highlighted, until I manually close it. And when I re-open it, I want the last site I clicked to still be highlighted. I have hundreds of bookmarks organized into folders, with some folders deep inside others, and I lose my place in the "tree" every time the folder closes itself. This small difference in the way Firefox handles bookmarks is the only reason I still use IE.