Amazon.com is the Web’s version of Walmart.  Almost everything you could need is there, and they make it so simple to shop there and the prices so low, you cannot help but come back again and again for more.  If you find yourself turning to Amazon every time you order something online, then you might want to check out the Amazon Button add-on for Firefox.

Do you use multiple computers and want to sync your saved passwords between them all? LastPass is an extension for Firefox that will allow you to do that easily within the browser.  LastPass hides all your individual passwords behind one master password.  When you type in that master password, then LastPass automatically logs you in to any web site you have set it up to remember. 

Want to be able to create a much more dynamic signature for your webmail accounts and more, the will show off your instant messenger names, social network links and more details about yourself?  WiseStamp is a pretty awesome addition to Firefox, that will let you do that and so much more, in a very stylish way.
Once installed, you get your own WYSIWYG editor to create and edit your own signature collection.  You can add links via RSS, instant messenger [...]

Filed under, “not sure if I need it – but thanks, just in case” we have Texto.  This add-on for Firefox will allow you to launch an external text editor to edit text forms in Firefox. 
Here is a little more about the add-on from the Texto developer:
This add-on strips out much of the Mozex functionality to focus on launching external text editors. Features the ability to customize editor behavior for different websites, and uses the asynchronous process support [...]

I love any add-on or web site service that helps me organize my day to day life and duties.  Being somewhat of an organizational nut, I do have to say one of my favorite Firefox add-ons out there is ReminderFox.  This add-on for Firefox remembers things, so you don’t have to.

Are you one of those who can hardly wait for the newest version of Firefox to be released?  Well, I have found yet another theme that will at least help you pretend you are using it. 
Give the experimental theme, Fx4 a shot.  It will transform your browser to what has been pitched as the new look and feel for Firefox 4.

Rather than reloading each tab, one by one, wouldn’t you like to reload all your Firefox tabs at once?  Okay, I realize this might not be a need for everybody, which makes it a perfect add-on for the browser. 
Reload All allows you reload all the tabs in the window at one go.   Need to reload most, but not every single tab?  It can handle that too.  It features a selection tool in case you want to reload a [...]

What are you to do when your just about to be caught looking at something you shouldn’t while you are using Firefox at work?  In need of a panic button?  There’s no need at all, as long as you have the Simple Boss Key add-on for Firefox installed. 
Once installed, all you have to do is quickly hit the F12 button to minimize the current browser window.  One more useful tip to know if that is switches to focusing [...]

When you mix simple and Firefox together, you can get my attention every time.  The Simple Links Counter add-on for Firefox shows the number of internal and external links on any given page in the browser status bar.   This makes it the perfect companion for all your other web developer tools and add-ons for Firefox.

Is that Firefox browsing window too big or too small for you?  Maybe it is just right, and you would like to keep it that way?  The Window Resizer add-on for Firefox lets you resize Firefox to tons of sizes (and remembers them for later!).