Do you find yourself typing the same snipits of information over and over again?  Maybe it is a form you need people to answer, or perhaps it is just your e-mail signature.  With Clippings, an extension for Firefox, you can quickly archive all your most used blocks of text to be used anytime.
Once you have this add-on installed, you can save frequently entered text for later really easily.  All it takes is two mouse clicks and your text [...]

Here is a tip I randomly ran across via Smart Productivity.  Want to quickly copy and paste a text-based list of your bookmarks?  All you need to do is right-click a folder icon in your bookmarks and select Copy.  After doing so, you can right-click and select Paste to paste the list anywhere you need it.  It will be saved to your clipboard, organized by folder names.
Here is one more tip from the Smart Productivity blog:
One other great use [...]

Sure, you can highlight with your mouse, right-click and copy – but why do that when there are so many awesome add-ons for Firefox that will help you get it done better and faster?  If your looking for an extension to help power up your browser’s copying of links, information and more I have seven of them that should help you get the job done.
Copy All Urls – This copies and pastes all urls of open tabs inclusive history in [...]

If you are looking for an extension to copy all the URLs in the open tabs you have in Firefox, there is only one choice you have. Copy All URLs does the job and it does it well.
After installing – all you need to do is right click on any web site, then pick  Copy All URLs from the menu.  From there you can copy all the URLs for the open tabs, or paste them.  Simple enough, right?
After copying [...]

Do you find yourself typing the same thing over and over again? Maybe you want to save something you have written so you can post it over and over again in E-mails to all your friends. If you have found yourself in that boat, then Clippings is the Firefox extension you need to install.
+ Learn More About Clippings!

If there is one thing that we type in more than our names and passwords, it is our E-mail address. The thing we need is a tool that would just remember out E-mail address and paste it in where we wanted it and when we wanted it. Oh, you mean there is such a thing? The Paste E-mail Firefox extension does just that.
[Learn More About the Paste E-Mail Firefox Extension!]

Do your fingers ever get tired of hunting down a certain key that is hard to type? Maybe you find yourself saying the same thing over and over in a set of forums. PastePalette allows you to quickly paste anything into a Web site’s text field. Check out the screenshots to see it in action. This extension is simple, but effective.
[Learn More About PastePallette!]