If you do a lot of work online, being able to take notes as you work is definitely a good thing.  Rather than scribbling on random sheets of paper or bouncing between Firefox and a notepad-like program, keep it all in Firefox with QuickFox Notes. This multi-tab note taking extension is awesome.
Some of the features include:

Simple & Multi tab
Auto save notes
Check spelling
Changeable font size
Changeable background color
Easy search tool
Various keyboard shortcuts

Another nice feature is that it saves your notes in the [...]

Need to jot something down real quick before you forget, and don’t want to be bothered launching another web site or program to do it?  The Really Simple Notepad bookmarklet is just what the forgetful web user needs.
Just drag and drop this link to your bookmarks toolbar:
Really Simple Notepad
Now when you need it, hit the bookmarklet link and up will come a popup window where you can type. The fun doesn’t stop there though. If you want to save [...]