This seems worth posting for my relatively short friends list--A computerworld article listing 20 quite neat and nifty Firefox extensions. I know, there are more of them than anyone cares to count. But this is a good batch. If you go to the bottom of the first screen and click on "Print this article" they very kindly reformat into one long page instead of 5, and ***omit the advertising***. Enjoy.
http://tinyurl.com/3bf6un
http://tinyurl.com/3bf6un