This is one of those “under the radar, but still cool” features of Firefox 3 I haven’t heard much praise about. 
You can now search through your saved password information.  This is great for those of us who often forget what login we used with what web site and don’t want to go scroll happy [...]

This weekend I made a big mistake, I accidently deleted one of my folders inside of my bookmarks. I looked around for help, but there was none to be found. How did I get this folder back?
Well, all you have to do is open the Bookmarks Manager (Click on Bookmarks > Manage Bookmarks). [...]