Very useful extension. Remembering last folder for saving is very handy. The unrelated option to save new bookmarks at the top of the folder is also extremely useful. So, it turns out that the main purpose of this extension, to set a default folder for saving bookmarks, didn't glow as much as the side options (to me, at least...) Well, I'm not complaining, it's an essential extension, all those options should be incorporated to Firefox base code!