Want to make a quick note of the content you are browsing then here this link will be very useful for you.
Firefox Notepad: www.7is7.com/software/bookmarklets/notepad.html
Go to the above link, for installing the bookmarklet right click on a notepad boomark link and click on bookmark this link or simply drag it to the bookmarks toolbar. Now select the text you want to make a note and click on the “Notepad” bookmark on the bookmarks tool bar. That’s it now your text will be pasted on to the notepad and now you can save it a text file. You can even select images and text, drop them into the notepad and save it as a webpage.