My favorite addin for $g(Firefox) is SessionSaver which saves/restores all of your browser tabs (among other things) each time you shut down the browser so you can easily pick up where you left off. Firefox 2.0 added a similar feature but lands far short of the usefulness of SessionSaver. Ever since I upgraded to 2.0 I’ve been watching to see SessionSaver would be updated but I hadn’t found anything until I read through all of the comments on the here. There is a patch for SessionSaver available allowing it to work in FF 2.0. It’s a good thing because I’ve been considering moving back to FF 1.5 just to get SessionSaver back.